Company lists · Data verified August 2026

Top 25 Api integration platforms based in the United States

Name: Api integration 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 507 companies tracked

There are 507 api integration platforms headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 38,852 professional contacts across them, including 22,005 with verified work emails and 13,084 with mobile numbers. San Francisco is the largest hub.

This list covers api integration 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.

507Companies

38,852Contacts tracked

22,005Verified emails

13,084Mobile numbers

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The 25 largest api integration platforms based in the United States

Ranked by team size

Top 25 of 507 api integration 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	Servicenow	Chicago, IL	10001+	29,841	18,268
2	Zapier	San Francisco, CA	501-1,000	1,140	584
3	Celigo	Redwood City, CA	501-1,000	778	375
4	Redwood Software	Vienna, VA	501-1,000	645	313
5	CLEO	Rockford, IL	201-500	513	344
6	Jitterbit	Alameda, CA	201-500	395	197
7	Snaplogic	San Mateo, CA	201-500	357	190
8	Uncode	Irving, TX	201-500	174	13
9	Teamdynamix	Columbus, OH	51-200	160	111
10	Flowable	Atlanta, GA	201-500	125	72
11	Commercient	Marietta, GA	51-200	102	28
12	Conexa	San Francisco, CA	51-200	97	52
13	KIZEN	New York, NY	51-200	84	40
14	IFS Assyst	Herndon	1,001-5,000	84	23
15	Backflipt	Santa Clara, CA	51-200	83	27
16	Windward	Herndon, VA	51-200	80	25
17	Prismatic	Sioux Falls, SD	51-200	72	39
18	Adaptigent	Winter Park, FL	51-200	70	21
19	PORTX	Mercer Island, WA	51-200	64	37
20	Autonom8 INC	Saratoga, CA	51-200	64	22
21	CRUX	San Francisco, CA	51-200	64	11
22	LYSI	Newport Beach, CA	51-200	59	22
23	Logicon, LLC	Chicago, IL	51-200	55	13
24	Clarifire	Clearwater, FL	51-200	50	30
25	Cherwell Software	Colorado Springs, CO	501-1,000	48	17

Showing 25 of 507 api integration platforms based in the United States

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Api integration platforms based in the United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

San FranciscoLargest hub · 42 HQs

13,084Contacts with mobile numbers

101Emails re-verified in last 30 days

Companies by employee count

1-10

258

11-50

173

51-200

201-500

501-1,000

1,001-5,000

10001+

Api integration platforms by metro

Metro	Companies
Api integration platforms in San Francisco	42
Api integration platforms in New York	26
Api integration platforms in Austin	14
Api integration platforms in Chicago	11
Api integration platforms in Dallas	11
Api integration platforms in Miami	10
Api integration platforms in Houston	10
Api integration platforms 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 “api integration 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; 101 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 api integration platforms are there based in the United States?

There are 507 api integration platforms headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Servicenow, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most api integration platforms?

San Francisco leads with 42 headquartered companies, followed by New York (26) and Austin (14).

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 22,005 verified decision-maker contacts tracked across these 507 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.