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Company lists · Data refreshed September 2026

Top 25 Platform building firms based in San Francisco, United States

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 287 companies tracked

RevenueBase identified 287 platform building firms headquartered in San Francisco, United States as of September 2026 and tracks 31,958 professional contacts across them, including 15,848 with verified work emails. New York is the largest hub.

This list covers platform building firms headquartered in San Francisco, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 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.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review
287Companies
31,958Contacts tracked
15,848Verified emails
Unlock all 287 companies Free signup · no credit card · 500 free credits

The 25 largest platform building firms based in San Francisco, United States

Ranked by team size
Top 25 of 287 platform building firms based in San Francisco, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names platform building firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
GlobantIndirect evidence
San Francisco, CA, United StatesHQ checked Sep 5, 202610001+26,919

“At Globant, we create the digitally-native products that people love.”

Source: company website · checked Sep 5, 2026
2
Robosoft TechnologiesIndirect evidence
San Francisco, CA, United StatesHQ checked Sep 5, 20261,001-5,0001,097

“Engineering the Experience that matter.”

Source: company website · checked Sep 5, 2026
3
Zazmic INCPartial evidence
San Francisco, CA, United StatesHQ checked Sep 5, 2026201-500330

“We are Zazmic, a multi-platform hub for on-demand engineering & digital marketing solutions.”

Source: company website · checked Sep 5, 2026
4
ArctouchIndirect evidence
San Francisco, CA, United StatesHQ checked Sep 5, 2026201-500291

“ArcTouch helps companies of all sizes design and develop lovable apps and websites to forge meaningful connections with their customers.”

Source: company website · checked Sep 5, 2026
5
POVIOPartial evidence
San Francisco, CA, United StatesHQ checked Sep 5, 2026201-500231

“Povio is a San Francisco based design and development company building digital products that create a positive impact.”

Source: company website · checked Sep 5, 2026
6
FluxonIndirect evidence
San Francisco, CA, United StatesHQ checked Sep 5, 2026201-500200

“Fluxon is a San Francisco-based software development team trusted by Google, Anthropic, Stripe, and top startups with the technology work that matters most.”

Source: company website · checked Sep 5, 2026
7
Lateral GroupIndirect evidence
San Francisco, CA, United StatesHQ checked Sep 5, 2026201-500164

“LATERAL (Technology with Passion) adds business value through full service technology solutions.”

Source: company website · checked Sep 5, 2026
8
TOIIndirect evidence
San Francisco, CA, United StatesHQ checked Sep 5, 202611-50133

“We are a Digital Brand Strategy and UX Design agency.”

Source: company website · checked Sep 5, 2026
9
Cheesecake LabsIndirect evidence
San Francisco, CA, United StatesHQ checked Sep 5, 202651-200131

“Cheesecake Labs is an AI, Data, Blockchain, and Software Engineering company that partners with US companies to build and modernize digital products.”

Source: company website · checked Sep 5, 2026
10
Sourcebits DigitalIndirect evidence
San Francisco, CA, United StatesHQ checked Sep 5, 202651-200101

“Sourcebits-Ascendum Digital is a trusted digital transformation accelerator providing early access to next-generation technologies, disruptive innovation, and unique customer…”

Source: company website · checked Sep 5, 2026
11
RAW EngineeringIndirect evidence
San Francisco, CA, United StatesHQ checked Sep 5, 202651-20097

“Raw Engineering’s Innovative digital solutions and services are trusted by the world’s best Fortune 500 Enterprises, Sports & Entertainment companies and Startups to provide…”

Source: company website · checked Sep 5, 2026
12
West Agile LabsIndirect evidence
San Francisco, CA, United StatesHQ checked Sep 5, 2026201-50082

“West Agile Labs is a Digital Product Agency specializing in Design, Development and Consulting services.”

Source: company website · checked Sep 5, 2026
13
Clay UI UX Design AgencyIndirect evidence
San Francisco, CA, United StatesHQ checked Sep 5, 202611-5081

“Clay is a global UX design and branding agency headquartered in San Francisco.”

Source: company website · checked Sep 5, 2026
14
SudolabsPartial evidence
San Francisco, CA, United StatesHQ checked Sep 5, 202651-20071

“We are a go-to digital product-building studio dedicated to helping US startups and enterprises shape and build their product ideas and set up a long-term growth trajectory.”

Source: company website · checked Sep 5, 2026
15
Somnio SoftwareIndirect evidence
San Francisco, CA, United StatesHQ checked Sep 5, 202651-20065

“We’re a Digital Product Agency you can grow with, globally recognized as a Top Flutter development company.”

Source: company website · checked Sep 5, 2026
16
Span DigitalIndirect evidence
San Francisco, CA, United StatesHQ checked Sep 5, 202651-20060

“SPAN is a technical strategy and software engineering firm.”

Source: company website · checked Sep 5, 2026
17
CmoldsPartial evidence
San Francisco, CA, United StatesHQ checked Sep 5, 2026501-1,00055

“CMOLDS is a tech development company founded in 2016, focused on building mobile and web applications, UX/UI design systems, and custom software solutions.”

Source: company website · checked Sep 5, 2026
18
Gbsfo Custom Software Solutions ProviderIndirect evidence
San Francisco, CA, United StatesHQ checked Sep 5, 202651-20050

“GBSFO is a creative software development solutions company with a strong attitude.”

Source: company website · checked Sep 5, 2026
19
SF AppworksIndirect evidence
San Francisco, CA, United StatesHQ checked Sep 5, 202611-5048

“San Francisco AppWorks is a leader in design-driven digital product development.”

Source: company website · checked Sep 5, 2026
20
PropanePartial evidence
San Francisco, CA, United StatesHQ checked Sep 5, 202611-5038

“Propane is a digital experience and platform agency.”

Source: company website · checked Sep 5, 2026
21
Cuban CouncilIndirect evidence
San Francisco, CA, United StatesHQ checked Sep 5, 202611-5032

“Cuban Council is a digital development agency which specializes in creating simply superb solutions for web & print & such.”

Source: company website · checked Sep 5, 2026
22
Mayven StudiosIndirect evidence
San Francisco, CA, United StatesHQ checked Sep 5, 202651-20030

“Mayven Studios is a software design and engineering partner that helps you build and scale successful digital products and experiences.”

Source: company website · checked Sep 5, 2026
23
RoundtechsquareIndirect evidence
San Francisco, CA, United StatesHQ checked Sep 5, 202611-5029

“At RoundTechSquare, we believe that every business deserves digital solutions that inspire growth and innovation.”

Source: company website · checked Sep 5, 2026
24
RamotionPartial evidence
San Francisco, CA, United StatesHQ checked Sep 5, 202611-5029

“Ramotion is a design agency that partners with growing startups, mid-market companies, corporations, enterprise organizations, and high-growth technology platforms.”

Source: company website · checked Sep 5, 2026
25
NewdealdesignIndirect evidence
San Francisco, CA, United StatesHQ checked Sep 5, 202611-5025

“Be Bold, Build Wisely.”

Source: company website · checked Sep 5, 2026

Showing 25 of 287 platform building firms based in San Francisco, United States

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Platform building firms based in San Francisco, United States at a glance

As of Sep 5, 2026
11-50Median size (employees)
New YorkLargest hub · 801 HQs
Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
124
11-50
124
51-200
25
201-500
9
501-1,000
2
1,001-5,000
1
5,001-10,000
1
10001+
1

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 287 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among platform building firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

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
Companies headquartered in San Francisco, United States whose own description of what they do matches “platform building firms”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among platform building firms, and records with no verified work email. Companies headquartered outside San Francisco are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 15,848 across the full list. 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 September 5, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Platform building firms by metro in the United States

Frequently asked

How many platform building firms are there based in San Francisco, United States?

RevenueBase identified 287 platform building firms headquartered in San Francisco, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Globant, headquartered in San Francisco, tops this list with the largest team on record.

Which city has the most platform building firms?

New York leads with 801 headquartered companies, followed by Austin (358) and Los Angeles (354).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 15,848 verified decision-maker contacts tracked across these 287 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 5, 2026.

Ready to reach these companies? Verified emails and direct dials for all 287 platform building firms based in San Francisco, United States. Start with a free account, no credit card.

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Related lists

Browse: Companies home · Platform building firms in United States · All United States lists · All Platform building firms lists · New lists

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.

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