Company lists · Data verified August 2026

Top 25 Assessment and testing software companies based in the United States

Name: Assessment and testing 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 266 companies tracked

There are 266 assessment and testing software companies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 15,479 professional contacts across them, including 5,418 with verified work emails and 4,160 with mobile numbers. San Francisco is the largest hub.

This list covers assessment and testing 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.

266Companies

15,479Contacts tracked

5,418Verified emails

4,160Mobile numbers

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The 25 largest assessment and testing software companies based in the United States

Ranked by team size

Top 25 of 266 assessment and testing 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	NI National Instruments	Austin, TX	5,001-10,000	7,091	2,595
2	Ascend Learning	Burlington, MA	1,001-5,000	1,288	969
3	Cambium Assessment	Reston, VA	501-1,000	526	392
4	Logigear Corporation	San Mateo, CA	501-1,000	413	22
5	Meazure Learning	Mclean, VA	1,001-5,000	396	181
6	Scantron	Lancaster, PA	51-200	311	30
7	Kryterion, INC	Phoenix, AZ	201-500	234	62
8	Parasoft	Monrovia, CA	201-500	221	98
9	Questar Assessment INC	Apple Valley, MN	1,001-5,000	173	42
10	Wisewires Co. LTD	Los Angeles, CA	501-1,000	130	23
11	RTTS	NY	51-200	120	51
12	Surpass Assessment	West Chester, PA	51-200	115	85
13	Riverside Publishing	Rolling Meadows, IL	201-500	114	11
14	Enhops A Proarch Company	South Plainfield, NJ	501-1,000	111	10
15	Kiwiqa Services	Buffalo, NY	51-200	108	28
16	Eskill	San Antonio, TX	51-200	95	29
17	Trustedqa, INC	Reston, VA	51-200	91	37
18	Ibeta Quality Assurance	Aurora, CO	51-200	89	20
19	Rooftop	Miami, FL	51-200	85	19
20	Vantage Learning	New Hope, PA	51-200	80	9
21	Metritech, INC	Champaign, IL	501-1,000	77	5
22	Shasta QA	Redding, CA	51-200	72	17
23	Emetric	San Antonio, TX	51-200	68	46
24	Finetune A Prometric Company	Boston, MA	51-200	54	8
25	Caveon	Midvale, UT	51-200	52	33

Showing 25 of 266 assessment and testing software companies based in the United States

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Assessment and testing software companies based in the United States at a glance

As of Aug 28, 2026

11-50Median size (employees)

San FranciscoLargest hub · 12 HQs

4,160Contacts with mobile numbers

27Emails re-verified in last 30 days

Companies by employee count

1-10

105

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Assessment and testing software companies by metro

Metro	Companies
Assessment and testing software companies in San Francisco	12
Assessment and testing software companies in Austin	9
Assessment and testing software companies in San Antonio	7
Assessment and testing software companies in New York	6
Assessment and testing software companies in Los Angeles	6
Assessment and testing software companies in Houston	5
Assessment and testing software companies in Raleigh	5
Assessment and testing software companies in San Jose	5

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 “assessment and testing 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 assessment and testing software companies are there based in the United States?

There are 266 assessment and testing software companies headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

NI National Instruments, headquartered in Austin, tops this list with the largest team on record.

Which city has the most assessment and testing software companies?

San Francisco leads with 12 headquartered companies, followed by Austin (9) and San Antonio (7).

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 5,418 verified decision-maker contacts tracked across these 266 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.