Company lists · Data refreshed November 2026
Top 25 Voice assistant software developers based in San Francisco, United States
RevenueBase identified 99 company matches for voice assistant software developers associated with San Francisco, United States as of November 2026 and tracks 2,589 professional contacts across them, including 1,207 with verified work emails. Across the United States, San Francisco is the largest hub for this category.
This list covers company matches for voice assistant software developers associated with San Francisco, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 5, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest voice assistant software developers based in San Francisco, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,036 contacts → | ||||
Exact match “Sierra helps businesses build better, more human customer experiences with AI.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 2 | 165 contacts → | ||||
Exact match “Voice is the human interface for business.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 3 | 157 contacts → | ||||
Exact match “Rasa is the agent building platform for AI product teams, enabling engineers and business teams to build, test, and ship agents together at speed.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 4 | 142 contacts → | ||||
Exact match “At Murf AI, we’re building the infrastructure for the next generation of voice agents.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 5 | 114 contacts → | ||||
Exact match “AssemblyAI is the best way to build Voice AI apps.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 6 | 82 contacts → | ||||
Exact match “Newo Inc, a company based in Silicon Valley, California, is the creator of the Newo.ai Human-like AI Employee Builder.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 7 | 82 contacts → | ||||
Exact match “At BotsCrew, we revolutionize the way companies engage with their customers and empower their employees through innovative generative AI agents and voice assistants.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 8 | 79 contacts → | ||||
Exact match “The leading enterprise platform to build AI Agents for Customer Service - used by businesses from scaling startups to the Fortune 500.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 9 | 57 contacts → | ||||
Exact match “Orion has pioneered frontline worker access to AI, enabling an easy and compelling new concept: Frontline AI.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 10 | 55 contacts → | ||||
Exact match “At Rime, we're on a mission to make voice AI feel more human.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 11 | 52 contacts → | ||||
Exact match “Fundamento is an AI voice bot for enterprise contact centers.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 12 | 35 contacts → | ||||
Exact match “Building AI that- talks just like a person - connects to your existing software - gets better every conversation Give our AI a call:+1 (844) 734-4902” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 13 | 19 contacts → | ||||
Exact match “Simple AI - AI phone agents made Simple.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 14 | 18 contacts → | ||||
Exact match “Marr Labs makes Vox, a failsafe AI-voice agent that is indistinguishable from humans.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 15 | 17 contacts → | ||||
Exact match “Zammo.ai is on a mission to make generative AI accessible, secure, and impactful for organizations across all industries.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 16 | 16 contacts → | ||||
Exact match “check out our website” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 17 | 13 contacts → | ||||
Exact match “Voice AI agents for businesses.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 18 | 12 contacts → | ||||
Exact match “AI Voice bots automating phone calls and executing tasks like humans” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 19 | 12 contacts → | ||||
Exact match “Speech-to-speech AI voice agents that handle every call, every environment, every workflow.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 20 | 12 contacts → | ||||
Exact match “Soopra AI lets you create a smart, digital version of yourself or your brand that’s available 24/7.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 21 | 11 contacts → | ||||
Exact match “Reliable Voice AI” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 22 | 10 contacts → | ||||
Exact match “InTone provides Gen AI-powered voice agents for outbound sales calls, enabling businesses to scale personalized, human-like conversations.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 23 | 8 contacts → | ||||
Exact match “Generative AI voice agents for healthcare” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 24 | 8 contacts → | ||||
Exact match “Webless is a well funded Enterprise AI company.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 25 | 6 contacts → | ||||
Exact match “At MosaicVoice, we believe the call center is the voice of the enterprise.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “voice assistant software developers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 99 voice assistant software developers based in San Francisco, United States
See the full list, filter by size, metro and specialty, and access 1,207 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Voice assistant software developers based in San Francisco, United States at a glance
As of Nov 5, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 99 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with San Francisco, United States whose business descriptions match “voice assistant software developers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 1,207 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on November 5, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Voice assistant software developers by metro in the United States
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “voice assistant software developers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many voice assistant software developers are there based in San Francisco, United States?
RevenueBase identified 99 company matches for voice assistant software developers associated with San Francisco, United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Sierra tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city in the United States has the most voice assistant software developers?
San Francisco leads the United States with 99 company records, followed by New York (58) and Austin (27).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,207 professional contacts with verified work emails tracked across these 99 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 5, 2026.
Ready to reach these companies? Verified emails and direct dials for all 99 voice assistant software developers based in San Francisco, United States. Start with a free account, no credit card.
Download this list →Related lists
Voice assistant software developers by geography
- Voice assistant software developers based in Sao Paulo, Brazil
- Voice assistant software developers based in Paris, France
- Voice assistant software developers based in Berlin, Germany
- Voice assistant software developers based in Bangalore, India
- Voice assistant software developers based in Hyderabad, India
- Voice assistant software developers based in London, United Kingdom
- Voice assistant software developers based in New York, United States
- Voice assistant software developers based in Australia
- Voice assistant software developers based in Brazil
- Voice assistant software developers based in Canada
- Voice assistant software developers based in France
- Voice assistant software developers based in Germany
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Voice assistant software developers based in Sao Paulo, Brazil
- Voice assistant software developers based in Paris, France
- Voice assistant software developers based in Berlin, Germany
- Voice assistant software developers based in Bangalore, India
- Voice assistant software developers based in Hyderabad, India
- Voice assistant software developers based in London, United Kingdom
Company intelligence · public preview
Top 25 voice assistant software developers based in San Francisco, United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 99 matching company records for voice assistant software developers based in San Francisco, United States, with 2,589 tracked contacts and 1,207 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 5, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 voice assistant software developers based in San Francisco, United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Sierrasierra.aiHQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 1,036 contacts → |
“Sierra helps businesses build better, more human customer experiences with AI.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  VAPIvapi.aiHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 165 contacts → |
“Voice is the human interface for business.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  RASArasa.comHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 157 contacts → |
“Rasa is the agent building platform for AI product teams, enabling engineers and business teams to build, test, and ship agents together at speed.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Murf AImurf.aiHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 142 contacts → |
“At Murf AI, we’re building the infrastructure for the next generation of voice agents.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Assemblyaiassemblyai.comHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 114 contacts → |
“AssemblyAI is the best way to build Voice AI apps.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  newo.ainewo.aiHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 82 contacts → |
“Newo Inc, a company based in Silicon Valley, California, is the creator of the Newo.ai Human-like AI Employee Builder.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Botscrewbotscrew.comHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 82 contacts → |
“At BotsCrew, we revolutionize the way companies engage with their customers and empower their employees through innovative generative AI agents and voice assistants.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Voiceflowlink.voiceflow.comHQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 79 contacts → |
“The leading enterprise platform to build AI Agents for Customer Service - used by businesses from scaling startups to the Fortune 500.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Orion Labsorionlabs.ioHQ: San Francisco, CA, United StatesReported employees: Not recorded | San Francisco, CA, United States | Not recorded | Exact match | 57 contacts → |
“Orion has pioneered frontline worker access to AI, enabling an easy and compelling new concept: Frontline AI.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  RIMErime.aiHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 55 contacts → |
“At Rime, we're on a mission to make voice AI feel more human.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Fundamentofundamento.aiHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 52 contacts → |
“Fundamento is an AI voice bot for enterprise contact centers.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Phonelyphonely.linkHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 35 contacts → |
“Building AI that- talks just like a person - connects to your existing software - gets better every conversation Give our AI a call:+1 (844) 734-4902” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Simple AIusesimple.aiHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 19 contacts → |
“Simple AI - AI phone agents made Simple.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Marr Labsmarrlabs.comHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 18 contacts → |
“Marr Labs makes Vox, a failsafe AI-voice agent that is indistinguishable from humans.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  zammo.aizammo.aiHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 17 contacts → |
“Zammo.ai is on a mission to make generative AI accessible, secure, and impactful for organizations across all industries.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  EGO AI YC W24ego.liveHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 16 contacts → |
“check out our website” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Leaping AIleapingai.comHQ: San Francisco, United StatesReported employees: 11-50 | San Francisco, United States | 11-50 | Exact match | 13 contacts → |
“Voice AI agents for businesses.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Infer YC S21infer.soHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 12 contacts → |
“AI Voice bots automating phone calls and executing tasks like humans” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Kindred Voicekindredvoice.aiHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 12 contacts → |
“Speech-to-speech AI voice agents that handle every call, every environment, every workflow.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  soopra.aisoopra.aiHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 12 contacts → |
“Soopra AI lets you create a smart, digital version of yourself or your brand that’s available 24/7.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Phonicphonic.coHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 11 contacts → |
“Reliable Voice AI” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Intoneintone.ioHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 10 contacts → |
“InTone provides Gen AI-powered voice agents for outbound sales calls, enabling businesses to scale personalized, human-like conversations.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Penciled YC W24penciled.comHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 8 contacts → |
“Generative AI voice agents for healthcare” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Weblesswebless.aiHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 8 contacts → |
“Webless is a well funded Enterprise AI company.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Mosaicvoice YC W22mosaicvoice.aiHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 6 contacts → |
“At MosaicVoice, we believe the call center is the voice of the enterprise.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 99 company matches
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Voice assistant software developers: dataset insights
November 5, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
99 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 99 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 5, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Voice assistant software developers by metro in the United States
Questions about this company list
What does Exact match mean for voice assistant software developers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many voice assistant software developers did RevenueBase find based in San Francisco, United States?
The saved snapshot records 99 matching company records, 2,589 tracked contacts and 1,207 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 5, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Voice assistant software developers by geography
- Voice assistant software developers based in Sao Paulo, Brazil
- Voice assistant software developers based in Paris, France
- Voice assistant software developers based in Berlin, Germany
- Voice assistant software developers based in Bangalore, India
- Voice assistant software developers based in Hyderabad, India
- Voice assistant software developers based in London, United Kingdom
- Voice assistant software developers based in New York, United States
- Voice assistant software developers based in Australia
- Voice assistant software developers based in Brazil
- Voice assistant software developers based in Canada
- Voice assistant software developers based in France
- Voice assistant software developers based in Germany
Cite this list
RevenueBase Data Team. Top 25 voice assistant software developers based in San Francisco, United States. Snapshot: November 5, 2026. https://revenuebase.ai/companies/voice-assistant-software-developers/united-states/san-francisco.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Voice assistant software developers based in Sao Paulo, Brazil
- Voice assistant software developers based in Paris, France
- Voice assistant software developers based in Berlin, Germany
- Voice assistant software developers based in Bangalore, India
- Voice assistant software developers based in Hyderabad, India
- Voice assistant software developers based in London, United Kingdom
Company intelligence · public preview
Top 25 voice assistant software developers based in San Francisco, United States
RevenueBase records 99 matching company records for voice assistant software developers based in San Francisco, United States, with 2,589 tracked contacts and 1,207 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 5, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 voice assistant software developers based in San Francisco, United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Sierrasierra.ai HQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 1,036 contacts → |
“Sierra helps businesses build better, more human customer experiences with AI.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | VAPIvapi.ai HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 165 contacts → |
“Voice is the human interface for business.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | RASArasa.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 157 contacts → |
“Rasa is the agent building platform for AI product teams, enabling engineers and business teams to build, test, and ship agents together at speed.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Murf AImurf.ai HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 142 contacts → |
“At Murf AI, we’re building the infrastructure for the next generation of voice agents.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Assemblyaiassemblyai.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 114 contacts → |
“AssemblyAI is the best way to build Voice AI apps.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | newo.ainewo.ai HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 82 contacts → |
“Newo Inc, a company based in Silicon Valley, California, is the creator of the Newo.ai Human-like AI Employee Builder.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Botscrewbotscrew.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 82 contacts → |
“At BotsCrew, we revolutionize the way companies engage with their customers and empower their employees through innovative generative AI agents and voice assistants.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Voiceflowlink.voiceflow.com HQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 79 contacts → |
“The leading enterprise platform to build AI Agents for Customer Service - used by businesses from scaling startups to the Fortune 500.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Orion Labsorionlabs.io HQ: San Francisco, CA, United StatesReported employees: Not recorded | San Francisco, CA, United States | Not recorded | Exact match | 57 contacts → |
“Orion has pioneered frontline worker access to AI, enabling an easy and compelling new concept: Frontline AI.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | RIMErime.ai HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 55 contacts → |
“At Rime, we're on a mission to make voice AI feel more human.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Fundamentofundamento.ai HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 52 contacts → |
“Fundamento is an AI voice bot for enterprise contact centers.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Phonelyphonely.link HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 35 contacts → |
“Building AI that- talks just like a person - connects to your existing software - gets better every conversation Give our AI a call:+1 (844) 734-4902” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Simple AIusesimple.ai HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 19 contacts → |
“Simple AI - AI phone agents made Simple.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Marr Labsmarrlabs.com HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 18 contacts → |
“Marr Labs makes Vox, a failsafe AI-voice agent that is indistinguishable from humans.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | zammo.aizammo.ai HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 17 contacts → |
“Zammo.ai is on a mission to make generative AI accessible, secure, and impactful for organizations across all industries.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | EGO AI YC W24ego.live HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 16 contacts → |
“check out our website” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Leaping AIleapingai.com HQ: San Francisco, United StatesReported employees: 11-50 | San Francisco, United States | 11-50 | Exact match | 13 contacts → |
“Voice AI agents for businesses.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Infer YC S21infer.so HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 12 contacts → |
“AI Voice bots automating phone calls and executing tasks like humans” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Kindred Voicekindredvoice.ai HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 12 contacts → |
“Speech-to-speech AI voice agents that handle every call, every environment, every workflow.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | soopra.aisoopra.ai HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 12 contacts → |
“Soopra AI lets you create a smart, digital version of yourself or your brand that’s available 24/7.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Phonicphonic.co HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 11 contacts → |
“Reliable Voice AI” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Intoneintone.io HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 10 contacts → |
“InTone provides Gen AI-powered voice agents for outbound sales calls, enabling businesses to scale personalized, human-like conversations.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Penciled YC W24penciled.com HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 8 contacts → |
“Generative AI voice agents for healthcare” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Weblesswebless.ai HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 8 contacts → |
“Webless is a well funded Enterprise AI company.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Mosaicvoice YC W22mosaicvoice.ai HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 6 contacts → |
“At MosaicVoice, we believe the call center is the voice of the enterprise.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 99 company matches
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Voice assistant software developers: dataset insights
November 5, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
99 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 99 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 5, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Voice assistant software developers by metro in the United States
Questions about this company list
What does Exact match mean for voice assistant software developers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many voice assistant software developers did RevenueBase find based in San Francisco, United States?
The saved snapshot records 99 matching company records, 2,589 tracked contacts and 1,207 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 5, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Voice assistant software developers by geography
- Voice assistant software developers based in Sao Paulo, Brazil
- Voice assistant software developers based in Paris, France
- Voice assistant software developers based in Berlin, Germany
- Voice assistant software developers based in Bangalore, India
- Voice assistant software developers based in Hyderabad, India
- Voice assistant software developers based in London, United Kingdom
- Voice assistant software developers based in New York, United States
- Voice assistant software developers based in Australia
- Voice assistant software developers based in Brazil
- Voice assistant software developers based in Canada
- Voice assistant software developers based in France
- Voice assistant software developers based in Germany
Cite this list
RevenueBase Data Team. Top 25 voice assistant software developers based in San Francisco, United States. Snapshot: November 5, 2026. https://revenuebase.ai/companies/voice-assistant-software-developers/united-states/san-francisco.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Voice assistant software developers based in Sao Paulo, Brazil
- Voice assistant software developers based in Paris, France
- Voice assistant software developers based in Berlin, Germany
- Voice assistant software developers based in Bangalore, India
- Voice assistant software developers based in Hyderabad, India
- Voice assistant software developers based in London, United Kingdom