Company lists · Data verified August 2026

Top 25 Sales engagement platforms based in the United States

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 1,201 companies tracked

There are 1,201 sales engagement platforms headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 26,301 professional contacts across them, including 9,008 with verified work emails and 7,117 with mobile numbers. San Francisco is the largest hub.

This list covers sales engagement 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. Data current as of August 28, 2026.

1,201Companies

26,301Contacts tracked

9,008Verified emails

7,117Mobile numbers

Unlock all 1,201 companies Free account · no credit card · 2 minutes

The 25 largest sales engagement platforms based in the United States

Ranked by team size

Top 25 of 1,201 sales engagement platforms based in the United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Klaviyo	Boston, MA	1,001-5,000	2,859	1,624
2	6sense	New York	1,001-5,000	1,426	848
3	Outreach	Atlanta, GA	501-1,000	1,267	552
4	Cience	Miami, FL	201-500	1,071	12
5	apollo.io	San Francisco, CA	501-1,000	843	293
6	Vendasta	Boston, MA	501-1,000	768	268
7	Adobe Marketo	Atlanta, GA	1,001-5,000	570	109
8	Infoanalytica, INC	San Jose, CA	201-500	477	94
9	Invoca	West Hollywood, CA	201-500	384	258
10	Callrail	Atlanta, GA	201-500	330	215
11	NOOKS	San Francisco, CA	51-200	317	63
12	Vinsolutions By COX Automotive	Mission, KS	501-1,000	296	84
13	Aviso AI	Redwood City, CA	201-500	292	141
14	Convoso	Los Angeles, CA	201-500	246	120
15	Tacton	Chicago, IL	201-500	231	158
16	Lemlist	New York, NY	51-200	220	34
17	Artisan	San Francisco	51-200	211	37
18	Leandata	Santa Clara, CA	51-200	207	126
19	Allego	Waltham, MA	201-500	206	138
20	Reveneer	Fort Lauderdale, FL	201-500	176	105
21	Salesboxai	New York, NY	51-200	162	44
22	CLOSE	New York City, NY	51-200	142	91
23	Accent Technologies	Melbourne, FL	51-200	136	21
24	selling.com	Newton, MA	51-200	126	20
25	Apparound	San Francisco, CA	51-200	100	81

Showing 25 of 1,201 sales engagement platforms based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 9,008 reachable decision-makers.

Free account · no credit card

See all 1,201 companies

Sales engagement platforms based in the United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

San FranciscoLargest hub · 129 HQs

7,117Contacts with mobile numbers

77Emails re-verified in last 30 days

Companies by employee count

1-10

653

11-50

394

51-200

118

201-500

501-1,000

1,001-5,000

5,001-10,000

Sales engagement platforms by metro

Metro	Companies
Sales engagement platforms in San Francisco	129
Sales engagement platforms in New York	89
Sales engagement platforms in Austin	36
Sales engagement platforms in Los Angeles	33
Sales engagement platforms in Miami	28
Sales engagement platforms in Boston	26
Sales engagement platforms in Sheridan	25

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “sales engagement platforms”, with match quality audited by blind human judging, and headquartered in the United States.
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: Contact records re-verify on a rolling cadence; 77 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many sales engagement platforms are there based in the United States?

There are 1,201 sales engagement platforms headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Klaviyo, headquartered in Boston, tops this list with the largest team on record.

Which city has the most sales engagement platforms?

San Francisco leads with 129 headquartered companies, followed by New York (89) and Austin (36).

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 9,008 verified decision-maker contacts tracked across these 1,201 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 1,201 sales engagement platforms based in the United States. Start with a free account, no credit card.

Get the full list

Related lists

Sales engagement platforms by geography

Browse the directory

Browse: Companies home · All United States lists · All Sales engagement platforms lists · New lists

About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.