Company lists · Data refreshed September 2026

Top 25 Software quality consulting firms based in the United States

Name: Software quality consulting firms 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 2,728 companies tracked

RevenueBase identified 2,728 software quality consulting firms headquartered in the United States as of September 2026 and tracks 44,894 professional contacts across them, including 9,987 with verified work emails. New York is the largest hub.

This list covers software quality consulting firms 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

2,728Companies

44,894Contacts tracked

9,987Verified emails

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The 25 largest software quality consulting firms based in the United States

Ranked by team size

Top 25 of 2,728 software quality consulting firms 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 software quality consulting firms: 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	Exadel	Strong evidence	Walnut Creek, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,874 contacts →
	Strong evidence “Exadel is a leading global software consulting and development company that looks beyond the code to maximize the technology-driven business impact our partners want to make.” Source: RevenueBase Database · checked Sep 29, 2026
2	Applause	Strong evidence	Framingham, MA, United StatesHQ checked Sep 29, 2026	201-500	1,396 contacts →
	Strong evidence “Applause is the global leader in managed software testing services and digital quality.” Source: RevenueBase Database · checked Sep 29, 2026
3	RGBSI	Partial evidence	Troy, MI, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,040 contacts →
	Partial evidence “At RGBSI, we deliver engineering and quality solutions that close the gap between strategy and execution for global organizations of all sizes.” Source: RevenueBase Database · checked Sep 29, 2026
4	A1qa	Strong evidence	Decatur, GA, United StatesHQ checked Sep 29, 2026	1,001-5,000	980 contacts →
	Strong evidence “a1qa is a global software testing and QA outsourcing company trusted by IT firms and Fortune 500 enterprises to deliver software quality that holds under real-world pressure.” Source: RevenueBase Database · checked Sep 29, 2026
5	Qasource	Strong evidence	Pleasanton, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	906 contacts →
	Strong evidence “QASource is a leading provider of outsourced software quality engineering services, offering scalable and customizable QA solutions to clients worldwide.” Source: RevenueBase Database · checked Sep 29, 2026
6	Galaxy Weblinks INC	Partial evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	501-1,000	789 contacts →
	Partial evidence “Galaxy Weblinks is a global technology consulting firm that helps businesses solve complex problems through design and tech.” Source: RevenueBase Database · checked Sep 29, 2026
7	Ionidea	Indirect evidence	Fairfax, VA, United StatesHQ checked Sep 29, 2026	1,001-5,000	784 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026
8	Qualizeal	Partial evidence	Irving, TX, United StatesHQ checked Sep 29, 2026	501-1,000	742 contacts →
	Partial evidence “QualiZeal is the world’s fastest-growing independent, AI-native Digital Quality Engineering services provider, redefining how organizations achieve quality at scale through our…” Source: RevenueBase Database · checked Sep 29, 2026
9	BJIT	Partial evidence	Dhaka, CA, United StatesHQ checked Sep 29, 2026	501-1,000	711 contacts →
	Partial evidence “BJIT is a global leader in offshore software development and IT outsourcing services.” Source: RevenueBase Database · checked Sep 29, 2026
10	Cienet Technologies	Strong evidence	Oak Brook, IL, United StatesHQ checked Sep 29, 2026	1,001-5,000	701 contacts →
	Strong evidence “CIeNET Technologies is a leading technology service provider in the areas of technical consulting, software engineering and solution services.” Source: RevenueBase Database · checked Sep 29, 2026
11	Thinksys INC	Strong evidence	Sunnyvale, CA, United StatesHQ checked Sep 29, 2026	201-500	461 contacts →
	Strong evidence “ThinkSys is a QA outsourcing and software testing company for SaaS, FinTech, and Healthcare engineering teams that need reliable quality at scale.” Source: RevenueBase Database · checked Sep 29, 2026
12	ZENQ	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 29, 2026	501-1,000	440 contacts →
	Indirect evidence “Information Technology & Services” Source: RevenueBase Database · checked Sep 29, 2026
13	ILAB	Strong evidence	Indianapolis, IN, United StatesHQ checked Sep 29, 2026	501-1,000	417 contacts →
	Strong evidence “iLAB specializes in Software Quality Assurance services, providing global solutions to our customers.” Source: RevenueBase Database · checked Sep 29, 2026
14	Astegic	Indirect evidence	Falls Church, VA, United StatesHQ checked Sep 29, 2026	51-200	415 contacts →
	Indirect evidence “For 15 years, Astegic has been helping Fortune 500 through startup companies with their Testing & QA needs.” Source: RevenueBase Database · checked Sep 29, 2026
15	Logigear Corporation	Indirect evidence	San Mateo, CA, United StatesHQ checked Sep 29, 2026	501-1,000	403 contacts →
	Indirect evidence “We are celebrating 30 years of testing excellence and innovation at LogiGear, we're proud to be a cornerstone in our clients' journeys, delivering confidence not just in our…” Source: RevenueBase Database · checked Sep 29, 2026
16	Auriga	Partial evidence	Woburn, MA, United StatesHQ checked Sep 29, 2026	501-1,000	351 contacts →
	Partial evidence “Auriga is a software R&D and IT outsourcing services provider incorporated in the U.S.” Source: RevenueBase Database · checked Sep 29, 2026
17	Primesoft Solutions, INC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 29, 2026	201-500	349 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026
18	Quality Professionals Q-Pros	Strong evidence	TX, United StatesHQ checked Sep 29, 2026	501-1,000	347 contacts →
	Strong evidence “Quality Professionals (Q-Pros) is a global independent software Quality Assurance and Testing services provider supporting enterprise and government organizations.” Source: RevenueBase Database · checked Sep 29, 2026
19	Tech Firefly	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	344 contacts →
	Indirect evidence “Let us join your journey to success!” Source: RevenueBase Database · checked Sep 29, 2026
20	Cts, INC	Indirect evidence	Birmingham, AL, United StatesHQ checked Sep 29, 2026	201-500	338 contacts →
	Indirect evidence “Since 1993, CTS has provided solutions to enterprise, mid-market, and emerging companies across a variety of industries, including energy and utilities, financial services…” Source: RevenueBase Database · checked Sep 29, 2026
21	Verista	Partial evidence	Fishers, IN, United StatesHQ checked Sep 29, 2026	501-1,000	323 contacts →
	Partial evidence “Verista is a leading business and technology consultancy firm that provides systems, compliance, validation and quality solutions to life science companies - enabling them to…” Source: RevenueBase Database · checked Sep 29, 2026
22	Koya Consulting INC	Strong evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	51-200	303 contacts →
	Strong evidence “Koya Consulting Inc, follows its own set of processes, methodologies, and disciplines in order to provide high-quality services.” Source: RevenueBase Database · checked Sep 29, 2026
23	Centraprise	Strong evidence	Iselin, NJ, United StatesHQ checked Sep 29, 2026	501-1,000	268 contacts →
	Strong evidence “At Centraprise, we foster a collaborative approach in delivering top-quality IT consulting and services to our clients.” Source: RevenueBase Database · checked Sep 29, 2026
24	Brickred Systems	Partial evidence	Redmond, WA, United StatesHQ checked Sep 29, 2026	501-1,000	266 contacts →
	Partial evidence “BrickRed Systems is Microsoft Gold certified partner also one among the leading Information Technology (IT) Consulting firms of the present generation.” Source: RevenueBase Database · checked Sep 29, 2026
25	Vaisesika	Partial evidence	Carlsbad, CA, United StatesHQ checked Sep 29, 2026	201-500	266 contacts →
	Partial evidence “Vaisesika Consulting is a global tech and consulting firm that helps businesses transform their digital setups and stay compliant in a straightforward way.” 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: software quality consulting firms. 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 software quality consulting firms.
Partial evidence: Its own public description names part of software quality consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name software quality consulting firms. 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 2,728 software quality consulting firms based in the United States

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Software quality consulting firms based in the United States at a glance

As of Sep 29, 2026

22.2%Verified-email coverage

16.5Average contacts per company

1-10Median size (employees)

3.2%Largest-city concentration · New York

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

1,650

11-50

638

51-200

318

201-500

501-1,000

1,001-5,000

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 2,728 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 software quality consulting firms, 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 “software quality consulting firms”. 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 software quality consulting firms), 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 software quality consulting firms, 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, 9,987 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.

Software quality consulting firms 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 software quality consulting firms, 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 software quality consulting firms are there based in the United States?

RevenueBase identified 2,728 software quality consulting firms 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?

Exadel, headquartered in Walnut Creek, tops this list with the largest team on record.

Which city has the most software quality consulting firms?

New York leads with 88 headquartered companies, followed by Austin (52) and Houston (50).

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 9,987 verified decision-maker contacts tracked across these 2,728 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.