Company lists · Data refreshed September 2026
Top 25 Outbound calling software vendors based in the United States
RevenueBase identified 324 outbound calling software vendors headquartered in the United States as of September 2026 and tracks 4,100 professional contacts across them, including 1,000 with verified work emails. New York is the largest hub.
This list covers outbound calling software vendors headquartered in the 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 outbound calling software vendors based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 289 contacts → | ||||
Indirect evidence “Current Vertical Focus: Real Estate - Lead Generation, Lead Conversion, Lead Qualification, Agent Recruiting Mortgage - Lead Conversion, Lead Qualification Insurance - Lead…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 256 contacts → | ||||
Indirect evidence “Boomsourcing (A Fusion CX Company) is a call center established in 2007.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 247 contacts → | ||||
Indirect evidence “Rocket Connections is a sales and support platform specializing in contact center services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 241 contacts → | ||||
Partial evidence “Convoso is an AI-powered contact center platform built for revenue teams and customer engagement organizations expanding into outbound growth.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 143 contacts → | ||||
Partial evidence “Orum is the live calling performance system for modern SDR teams.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 139 contacts → | ||||
Partial evidence “Launching AI Adaptive Roleplays - Build Cold Call Mastery with AI Roleplays That Create Continuous Training Pathways After every calling session, AI spots new skill gaps and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 95 contacts → | ||||
Indirect evidence “CallTrackingMetrics is the only digital platform that uses call tracking intelligence to inform contact center automation-resulting in a more personalized customer experience.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 89 contacts → | ||||
Indirect evidence “Aloware is the compliant, AI-driven phone system that works with your CRM to help you improve sales conversations.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 76 contacts → | ||||
Indirect evidence “CloudCall helps recruitment and sales teams connect faster, smarter, and with more context, directly inside their CRM.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 75 contacts → | ||||
Partial evidence “Kixie is a powerful, all-in-one calling and texting engagement platform that integrates natively with all leading CRMs, including HubSpot, Salesforce, Pipedrive, HighLevel, and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 75 contacts → | ||||
Indirect evidence “The new Standard in Outsourcing!” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 64 contacts → | ||||
Indirect evidence “Ytel helps sales teams talk to more people and close more deals.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 59 contacts → | ||||
Indirect evidence “Since 1994, TeleContact Resource Services has been committed to bringing the best in outsourced telemarketing solutions to our clients.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 53 contacts → | ||||
Indirect evidence “PhoneBurner is a power dialer that helps sales teams get through calls faster and have up to 4x more live conversations.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 53 contacts → | ||||
Indirect evidence “Scale Your Business Let's be honest, “A Business That Isn’t Growing, Is Slowly Dying”.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 51 contacts → | ||||
Indirect evidence “JustCall is an AI-powered communication platform built for high-growth sales and support teams capture, connect, and convert faster by replacing manual friction with instant…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 49 contacts → | ||||
Partial evidence “NetHunt CRM is the only tool you’ll need for outbound sales.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 48 contacts → | ||||
Indirect evidence “Koncert is a leading AI-powered B2B Sales Engagement Platform with over 15 years of innovation in dialer technology.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 44 contacts → | ||||
Indirect evidence “TitanX has transformed GTM for revenue leaders who are trying to fulfill THE MANDATE from leadership:"Scale Revenue, Not Headcount." While other teams are stuck at 3% connect…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 44 contacts → | ||||
Partial evidence “Before working with Outbound Consulting, our clients depended on referrals for nearly all of their growth.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 44 contacts → | ||||
Indirect evidence “Gabriel AI is an AI-powered SaaS platform helping companies connect with customers at scale through automated voice calls and voicemails.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 43 contacts → | ||||
Partial evidence “SuperDial automates high-volume outbound phone calls that healthcare teams make to insurers using advanced voice AI.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 43 contacts → | ||||
Indirect evidence “Ask any sales rep, and they’ll tell you 3 common pains that hinder B2B phone prospecting- It’s inefficient.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 39 contacts → | ||||
Partial evidence “Intelliverse® is a global leader in enterprise software and managed services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 38 contacts → | ||||
Indirect evidence “Call Tools has developed a cloud-based contact center solution that is designed to increase contact rates and accelerate sales revenue.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: outbound calling software vendors. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names outbound calling software vendors.
- Partial evidence
- Its own public description names part of outbound calling software vendors, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name outbound calling software vendors. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 324 outbound calling software vendors based in the United States
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,000 reachable decision-makers.
Free signup · no credit card
Outbound calling software vendors based in the United States at a glance
As of Sep 29, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 324 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 outbound calling software vendors, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “outbound calling software vendors”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names outbound calling software vendors), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among outbound calling software vendors, and records with no verified work email. Companies headquartered outside United States 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 its RevenueBase Smart Search 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, 1,000 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 29, 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.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names outbound calling software vendors, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many outbound calling software vendors are there based in the United States?
RevenueBase identified 324 outbound calling software vendors headquartered in the 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?
Calltend INC, headquartered in Austin, tops this list with the largest team on record.
Which city has the most outbound calling software vendors?
New York leads with 17 headquartered companies, followed by Sheridan (15) and Los Angeles (13).
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 1,000 verified decision-maker contacts tracked across these 324 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 29, 2026.
Ready to reach these companies? Verified emails and direct dials for all 324 outbound calling software vendors based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Outbound calling software vendors by geography
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 Smart Search, 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
- Outbound calling software vendors based in Brazil
- Outbound calling software vendors based in Canada
- Outbound calling software vendors based in Germany
- Outbound calling software vendors based in India
- Outbound calling software vendors based in the United Kingdom
- AI companies based in the United States