Company lists · Data verified August 2026

Top 25 Client relationship management software companies based in the United States

Name: Client relationship management software companies 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 667 companies tracked

There are 667 client relationship management software companies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 11,073 professional contacts across them, including 4,249 with verified work emails and 3,340 with mobile numbers. New York is the largest hub.

This list covers client relationship management software companies 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.

667Companies

11,073Contacts tracked

4,249Verified emails

3,340Mobile numbers

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The 25 largest client relationship management software companies based in the United States

Ranked by team size

Top 25 of 667 client relationship management software companies 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	Vendasta	Boston, MA	501-1,000	768	268
3	affinity.co	San Francisco, CA	201-500	287	164
4	Billingplatform	Englewood, CO	201-500	251	149
5	Leandata	Santa Clara, CA	51-200	207	126
6	KEAP	Chandler, AZ	201-500	200	58
7	ACT	Scottsdale, AZ	51-200	170	67
8	CLOSE	New York City, NY	51-200	142	91
9	Pipeliner CRM	Los Angeles, CA	51-200	135	25
10	Wealthbox	n/a	51-200	128	96
11	Riva International, INC	Sunnyvale, CA	51-200	126	65
12	Mirabel Technologies	Fort Lauderdale, FL	51-200	115	29
13	Paramantra	Charlestown, MA	51-200	112	11
14	Genesis Digital, LLC	Las Vegas, NV	51-200	104	57
15	Agile CRM By Mantra	Dallas, TX	51-200	100	3
16	Welcomehome Software	Atlanta, GA	51-200	86	66
17	Client Focus	Taylorsville, UT	51-200	83	27
18	Practifi	Chicago, IL	51-200	78	60
19	Lawmatics	San Diego, CA	51-200	78	58
20	500apps By Mantra	New York, NY	201-500	76	2
21	Insightly CRM By Unbounce	San Francisco, CA	51-200	73	13
22	Constant Contact Lead GEN & CRM	Gainesville, FL	1,001-5,000	71	11
23	Builder Prime	Denver, CO	51-200	70	45
24	Qantler Technologies	Edison, NJ	51-200	65	8
25	White CUP	Garden City, ID	51-200	52	39

Showing 25 of 667 client relationship management software companies based in the United States

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Client relationship management software companies based in the United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

New YorkLargest hub · 27 HQs

3,340Contacts with mobile numbers

27Emails re-verified in last 30 days

Companies by employee count

1-10

356

11-50

211

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Client relationship management software companies by metro

Metro	Companies
Client relationship management software companies in New York	27
Client relationship management software companies in San Francisco	22
Client relationship management software companies in Houston	15
Client relationship management software companies in Atlanta	15
Client relationship management software companies in Austin	13
Client relationship management software companies in Chicago	13
Client relationship management software companies in Los Angeles	10

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 “client relationship management software companies”, 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; 27 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 client relationship management software companies are there based in the United States?

There are 667 client relationship management software companies 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 client relationship management software companies?

New York leads with 27 headquartered companies, followed by San Francisco (22) and Houston (15).

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 4,249 verified decision-maker contacts tracked across these 667 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.

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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.