Company lists · Data refreshed September 2026

Top 25 Sales development platforms based in the United States

Name: Sales development platforms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 2,749 companies tracked

RevenueBase identified 2,749 sales development platforms headquartered in the United States as of September 2026 and tracks 60,143 professional contacts across them, including 21,252 with verified work emails. San Francisco is the largest hub.

This list covers sales development platforms 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 29, 2026 86% judged on-target in blind review

2,749Companies

60,143Contacts tracked

21,252Verified emails

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The 25 largest sales development platforms based in the United States

Ranked by team size

Top 25 of 2,749 sales development platforms based in the United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to sales development platforms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Hubspot	Partial evidence	Cambridge, MA, United StatesHQ checked Sep 29, 2026	5,001-10,000	11,077 contacts →
	Partial evidence “HubSpot is a leading agentic customer platform that provides software and support to help businesses grow better.” Source: RevenueBase Database · checked Sep 29, 2026
2	Zoominfo	Partial evidence	Vancouver, WA, United StatesHQ checked Sep 29, 2026	1,001-5,000	4,029 contacts →
	Partial evidence “ZoomInfo (NASDAQ: GTM) is the go-to-market platform that helps businesses find, acquire and grow their customers.” Source: RevenueBase Database · checked Sep 29, 2026
3	THRYV	Strong evidence	Dallas, TX, United StatesHQ checked Sep 29, 2026	1,001-5,000	2,412 contacts →
	Strong evidence “Thryv is an AI-powered platform built to help small businesses get found, win customers, and drive repeat sales.” Source: RevenueBase Database · checked Sep 29, 2026
4	6sense	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,443 contacts →
	Indirect evidence “6sense is on a mission to revolutionize the way B2B organizations create revenue by predicting customers most likely to buy and recommending the best course of action to engage…” Source: RevenueBase Database · checked Sep 29, 2026
5	Outreach	Partial evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	501-1,000	1,281 contacts →
	Partial evidence “Outreach, founded in 2014, is the only complete agentic AI platform for revenue teams.” Source: RevenueBase Database · checked Sep 29, 2026
6	Cience	Indirect evidence	Miami, FL, United StatesHQ checked Sep 29, 2026	201-500	1,068 contacts →
	Indirect evidence “CIENCE Technologies, Inc, founded in 2015 and headquartered in Denver, CO, is a pioneering global company in lead generation software and services, committed to transforming the…” Source: RevenueBase Database · checked Sep 29, 2026
7	Pipedrive	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	501-1,000	970 contacts →
	Partial evidence “Founded in 2010, Pipedrive is an easy and effective sales CRM that drives small business growth.” Source: RevenueBase Database · checked Sep 29, 2026
8	apollo.io	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 29, 2026	501-1,000	863 contacts →
	Strong evidence “Apollo.io is the AI-powered end-to-end go-to-market platform that empowers sales, marketing, and revenue teams to find prospects, engage customers, and close deals with…” Source: RevenueBase Database · checked Sep 29, 2026
9	Memoryblue	Indirect evidence	Tysons, VA, United StatesHQ checked Sep 29, 2026	501-1,000	825 contacts →
	Indirect evidence “memoryBlue is the go-to partner for revenue leaders in B2B Tech looking to grow their pipeline engine.” Source: RevenueBase Database · checked Sep 29, 2026
10	Manlitics B2B Ites	Indirect evidence	New York, United StatesHQ checked Sep 29, 2026	501-1,000	750 contacts →
	Indirect evidence “In an ERA of new and emerging digital mediums, we align our core expertise of today’s ever-changing technology with a clear understanding of traditional marketing methods without…” Source: RevenueBase Database · checked Sep 29, 2026
11	On24	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 29, 2026	501-1,000	622 contacts →
	Indirect evidence “ON24, a Cvent company, is on a mission to help businesses bring their go-to-market strategy into the AI era and drive cost-effective revenue growth.” Source: RevenueBase Database · checked Sep 29, 2026
12	Sugarai	Indirect evidence	Denver, CO, United StatesHQ checked Sep 29, 2026	501-1,000	576 contacts →
	Indirect evidence “SugarAI: the CRM that actually helps sellers sell.” Source: RevenueBase Database · checked Sep 29, 2026
13	Movingdneedle Pvt. LTD	Partial evidence	Sterling Heights, MI, United StatesHQ checked Sep 29, 2026	51-200	528 contacts →
	Partial evidence “movingDneedle is a Business to Business Sales Lead Generation Company that provides fast and scalable, sales qualified leads through its unique Personalized Email Marketing…” Source: RevenueBase Database · checked Sep 29, 2026
14	The Pipeline Group	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 29, 2026	201-500	523 contacts →
	Indirect evidence “The Pipeline Group helps B2B tech companies scale pipeline fast through our SDR-as-a-Service model.” Source: RevenueBase Database · checked Sep 29, 2026
15	Callbox INC	Indirect evidence	Encino, CA, United StatesHQ checked Sep 29, 2026	201-500	499 contacts →
	Indirect evidence “Callbox is the #1 trusted lead generation services and AI-Powered Growth Strategy Partner by enterprise and scaling businesses in the USA, Canada, Asia Pacific, Latin America…” Source: RevenueBase Database · checked Sep 29, 2026
16	Infoanalytica, INC	Partial evidence	San Jose, CA, United StatesHQ checked Sep 29, 2026	201-500	482 contacts →
	Partial evidence “InfoAnalytica is a B2B sales acceleration partner for mid-market and enterprise companies.” Source: RevenueBase Database · checked Sep 29, 2026
17	Smarte	Indirect evidence	Sunnyvale, CA, United StatesHQ checked Sep 29, 2026	51-200	480 contacts →
	Indirect evidence “At SMARTe, we understand the challenges faced by revenue-generating teams.” Source: RevenueBase Database · checked Sep 29, 2026
18	Saleshive	Indirect evidence	Denver, CO, United StatesHQ checked Sep 29, 2026	51-200	455 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026
19	Invoca	Partial evidence	West Hollywood, CA, United StatesHQ checked Sep 29, 2026	201-500	368 contacts →
	Partial evidence “Invoca is the revenue execution and platform leader that helps marketing, commerce, and contact center teams turn every conversation into revenue.” Source: RevenueBase Database · checked Sep 29, 2026
20	Calliduscloud	Partial evidence	Dublin, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	357 contacts →
	Partial evidence “CallidusCloud is now SAP Sales Cloud, part of the SAP Customer Experience division of SAP.” Source: RevenueBase Database · checked Sep 29, 2026
21	FUNNL	Partial evidence	Philadelphia, United StatesHQ checked Sep 29, 2026	201-500	349 contacts →
	Partial evidence “FunnL was built on a revolutionary idea: B2B companies don’t need more leads-they need more qualified sales meetings with decision-makers.” Source: RevenueBase Database · checked Sep 29, 2026
22	Callrail	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 29, 2026	201-500	332 contacts →
	Partial evidence “CallRail is the lead engagement platform that makes it easy for businesses to attract more leads, convert more customers, and optimize their marketing.” Source: RevenueBase Database · checked Sep 29, 2026
23	NOOKS	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 29, 2026	51-200	318 contacts →
	Indirect evidence “Nooks is the Agent Workspace for intelligent outbound.” Source: RevenueBase Database · checked Sep 29, 2026
24	Aviso AI	Indirect evidence	Redwood City, CA, United StatesHQ checked Sep 29, 2026	201-500	297 contacts →
	Indirect evidence “Aviso delivers Agentic AI that turns insights into autonomous actions, giving GTM teams precision, speed, and control to drive predictable growth at scale.” Source: RevenueBase Database · checked Sep 29, 2026
25	Vinsolutions By COX Automotive	Indirect evidence	Mission, KS, United StatesHQ checked Sep 29, 2026	501-1,000	292 contacts →
	Indirect evidence “VinSolutions is automotive CRM software designed to help dealerships turn shopper behavior into action-and results.” Source: RevenueBase Database · checked Sep 29, 2026

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: sales development platforms. 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 sales development platforms.
Partial evidence: Its own public description names part of sales development platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sales development platforms. 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 2,749 sales development platforms based in the United States

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Sales development platforms based in the United States at a glance

As of Sep 29, 2026

35.3%Verified-email coverage

21.9Average contacts per company

1-10Median size (employees)

6.8%Largest-city concentration · San Francisco

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

1,592

11-50

837

51-200

240

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 2,749 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 sales development platforms, 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 “sales development platforms”. 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 sales development platforms), 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 sales development platforms, 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, 21,252 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.

Sales development platforms by metro

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 sales development platforms, 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 sales development platforms are there based in the United States?

RevenueBase identified 2,749 sales development platforms 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?

Hubspot, headquartered in Cambridge, tops this list with the largest team on record.

Which city has the most sales development platforms?

San Francisco leads with 186 headquartered companies, followed by New York (181) and Austin (88).

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 21,252 verified decision-maker contacts tracked across these 2,749 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.

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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.