Company lists · Data refreshed September 2026
Top 25 Api testing software companies worldwide
RevenueBase identified 875 api testing software companies worldwide as of September 2026 and tracks 23,338 professional contacts across them, including 5,976 with verified work emails. India is the largest market and London the largest hub.
This list covers api testing software companies worldwide, 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 27, 2026. Country and city lists for api testing software companies follow the table.
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.
The 25 largest api testing software companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,269 contacts → | ||||
Partial evidence “Postman is the world’s leading API platform.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,814 contacts → | ||||
Strong evidence “BrowserStack is the world’s leading software testing platform, powered by AI and trusted by over teams, including Amazon, Microsoft, and NVIDIA, to deliver quality software at…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,396 contacts → | ||||
Strong evidence “Applause is the global leader in managed software testing services and digital quality.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 5 | 969 contacts → | ||||
Partial evidence “SmartBear delivers application integrity for modern tech stacks, ensuring continuous, measurable assurance that software just works as intended – with governance to operate at AI…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 6 | 494 contacts → | ||||
Partial evidence “Empowering growth-driven technology companies with reliable and efficient software quality assurance solutions, our QA services specialize in QA automation, staff augmentation…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 7 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 8 | 421 contacts → | ||||
Strong evidence “Exactpro is an independent provider of AI-enabled software testing, software development and consultancy services for financial sector organisations.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 9 | 415 contacts → | ||||
Partial evidence “For 15 years, Astegic has been helping Fortune 500 through startup companies with their Testing & QA needs.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 10 | 403 contacts → | ||||
Partial 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 27, 2026Thanks. The Data Team will review it. | |||||
| 11 | 386 contacts → | ||||
Strong evidence “With a team comprising of the best QA minds and Certified Software Testing Specialists, we provide seamless Quality Assurance & Software testing solutions for your DESKTOP, WEB…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 12 | 382 contacts → | ||||
Partial evidence “Katalon True Platform - the AI Platform for Software Quality.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 13 | 317 contacts → | ||||
Indirect evidence “Sauce Labs is the world’s largest full-lifecycle, test automation platform, and the company behind Selenium.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 14 | 301 contacts → | ||||
Strong evidence “Sybrant is a leader in Independent Software Testing.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 15 | 285 contacts → | ||||
Indirect evidence “Welcome to Qualitia - The Pioneers in Simplifying Test Automation!” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 16 | 272 contacts → | ||||
Strong evidence “Sixsentix is a leading provider of Software Testing Services, Visual Analytics and Reporting, helping enterprises to accelerate their Software Delivery.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 17 | 244 contacts → | ||||
Indirect evidence “Qualitrix is a Trust Engineering company helping enterprises build, modernize, and scale reliable digital and AI systems with confidence.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 18 | 221 contacts → | ||||
Strong evidence “ACCELQ is the only cloud-based continuous testing platform that seamlessly automates API and web testing without writing a single line of code.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 19 | 221 contacts → | ||||
Strong evidence “Parasoft helps organizations continuously deliver quality software with its market-proven, integrated suite of automated software testing tools.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 20 | 183 contacts → | ||||
Strong evidence “About HikeQA We are an independent Quality Assurance company who is successfully delivering robust QA and testing solutions for every type of software and mobile applications for…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 21 | 182 contacts → | ||||
Indirect evidence “Uma empresa que atua no mercado de tecnologia desde 2005.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 22 | 172 contacts → | ||||
Strong evidence “QSG (Quality Service Group) is an independent Software testing and test automation company.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 23 | 166 contacts → | ||||
Indirect evidence “Egem Bilgi İletişim (Egemsoft) yazılım geliştirme ve yazılım test hizmetleri vermek üzere 2011 yılında kurulmuştur.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 24 | 157 contacts → | ||||
Indirect evidence “Virgosol is an innovation-driven technology company that develops next-generation QA products and services.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 25 | 150 contacts → | ||||
Indirect evidence “Codoid Innovations – a futuristic QA Company - offers you innovative technology solutions that are guaranteed to accelerate your business, keep existing customers engaged, and…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
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: api testing software companies. 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 api testing software companies.
- Partial evidence
- Its own public description names part of api testing software companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name api testing software companies. 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 875 api testing software companies worldwide
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Api testing software companies worldwide at a glance
As of Sep 27, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 api testing software companies, 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.
- Coverage
- Every country. Country and city lists for api testing software companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “api testing software companies”. 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 api testing software companies), 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 api testing software companies, and records with no verified work email.
- 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, 5,976 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 27, 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.
Api testing software companies by location
5 lists · largest firstEvery Api testing software companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 api testing software companies, 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 api testing software companies are there worldwide?
RevenueBase identified 875 api testing software companies worldwide 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?
Postman, headquartered in San Francisco, tops this list with the largest team on record.
Which country has the most api testing software companies?
India leads with 177 companies, followed by the United States (162) and the United Kingdom (50). Every api testing software companies list by country and city is linked on this page.
Which city has the most api testing software companies?
London leads with 23 headquartered companies, followed by Noida (19) and Pune (17).
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 5,976 verified decision-maker contacts tracked across these 875 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 27, 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.