Company lists · Data refreshed September 2026

Top 25 Software security testing companies worldwide

Name: Software security testing companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 4,876 companies tracked

RevenueBase identified 4,876 software security testing companies worldwide as of September 2026 and tracks 70,790 professional contacts across them, including 17,088 with verified work emails. The United States is the largest market and London the largest hub.

This list covers software security testing 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 29, 2026. Country and city lists for software security testing 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.

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

4,876Companies

70,790Contacts tracked

17,088Verified emails

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The 25 largest software security testing companies worldwide

Ranked by team size

Top 25 of 4,876 software security testing companies worldwide, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to software security testing companies: 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	Private Sector	Indirect evidence	United StatesHQ checked Sep 29, 2026	n/a	12,771 contacts →
	Indirect evidence 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	Guidepoint Security	Partial evidence	Reston, VA, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,232 contacts →
	Partial evidence “GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Source: RevenueBase Database · checked Sep 29, 2026
4	SNYK	Partial evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,188 contacts →
	Partial evidence “Snyk, the leader in secure AI software development, empowers organizations to build fast and stay secure by unleashing developer productivity and reducing business risk.” Source: RevenueBase Database · checked Sep 29, 2026
5	Checkmarx	Indirect evidence	Paramus, NJ, United StatesHQ checked Sep 29, 2026	501-1,000	1,042 contacts →
	Indirect evidence “Checkmarx helps the world’s largest enterprises get ahead of application risk without slowing down development.” Source: RevenueBase Database · checked Sep 29, 2026
6	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
7	Synack RED Team	Partial evidence	Austin, TX, United StatesHQ checked Sep 29, 2026	n/a	813 contacts →
	Partial evidence “The Synack Red Team is a private freelance security research team that spans 6 continents and over 80 countries.” Source: RevenueBase Database · checked Sep 29, 2026
8	Veracode	Indirect evidence	Burlington, MA, United StatesHQ checked Sep 29, 2026	501-1,000	552 contacts →
	Indirect evidence “Veracode is a global leader in Application Risk Management for the AI era.” Source: RevenueBase Database · checked Sep 29, 2026
9	TTC Global	Strong evidence	Auckland, New ZealandHQ checked Sep 29, 2026	201-500	514 contacts →
	Strong evidence “TTC Global, formerly The Testing Consultancy, is a leading software assurance and testing services provider.” Source: RevenueBase Database · checked Sep 29, 2026
10	Pentera	Partial evidence	Burlington, MA, United StatesHQ checked Sep 29, 2026	201-500	486 contacts →
	Partial evidence “Pentera provides AI-powered Automated Security Validation for enterprise security teams.” Source: RevenueBase Database · checked Sep 29, 2026
11	Word Publishing	Strong evidence	Mumbai, IndiaHQ checked Sep 29, 2026	201-500	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 29, 2026
12	Resillion	Strong evidence	London, United KingdomHQ checked Sep 29, 2026	501-1,000	374 contacts →
	Strong evidence “At Resillion, we're more than just a global leader in quality engineering, testing, and cyber security – we're your dedicated partner from the start of your project to its…” Source: RevenueBase Database · checked Sep 29, 2026
13	Esec Forte Technologies	Partial evidence	Gurugram, IndiaHQ checked Sep 29, 2026	201-500	363 contacts →
	Partial evidence “eSec Forte® Technologies is a CMMi Level 3 certified Global Consulting and IT Security Services company with offerings across Cloud Security, Cyber Forensics, Malware Detection…” Source: RevenueBase Database · checked Sep 29, 2026
14	Cobalt	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 29, 2026	201-500	350 contacts →
	Partial evidence “Cobalt is the pioneer in pentesting as a service and a leader in offensive security services.” Source: RevenueBase Database · checked Sep 29, 2026
15	Bishop FOX	Strong evidence	Tempe, AZ, United StatesHQ checked Sep 29, 2026	201-500	344 contacts →
	Strong evidence “Bishop Fox is recognized as the leading authority in offensive security, providing solutions ranging from continuous penetration testing, red teaming, and attack surface…” Source: RevenueBase Database · checked Sep 29, 2026
16	Techdefence	Indirect evidence	Ahmedabad, IndiaHQ checked Sep 29, 2026	201-500	340 contacts →
	Indirect evidence “TechDefence Labs (TechD Cybersecurity Limited) Award-winning \| Innovative \| Visionary We empower organizations across the globe to secure their applications, networks, and digital…” Source: RevenueBase Database · checked Sep 29, 2026
17	Talakunchi Networks PVT LTD	Indirect evidence	Mumbai, IndiaHQ checked Sep 29, 2026	201-500	335 contacts →
	Indirect evidence “T A L A K U N C H I Networks Pvt.” Source: RevenueBase Database · checked Sep 29, 2026
18	Invicti	Indirect evidence	Austin, TX, United StatesHQ checked Sep 29, 2026	201-500	326 contacts →
	Indirect evidence “Invicti is transforming the way web applications are secured.” Source: RevenueBase Database · checked Sep 29, 2026
19	Nviso Security	Partial evidence	Brussels, BelgiumHQ checked Sep 29, 2026	201-500	315 contacts →
	Partial evidence “NVISO is a cyber security services firm composed of outstanding security professionals - each has a specific field of expertise, ranging from security research and risk management…” Source: RevenueBase Database · checked Sep 29, 2026
20	Sybrant Technologies P LTD	Strong evidence	Chennai, IndiaHQ checked Sep 29, 2026	201-500	301 contacts →
	Strong evidence “Sybrant is a leader in Independent Software Testing.” Source: RevenueBase Database · checked Sep 29, 2026
21	Zensoft Services	Indirect evidence	Pune, IndiaHQ checked Sep 29, 2026	201-500	285 contacts →
	Indirect evidence “Welcome to Qualitia - The Pioneers in Simplifying Test Automation!” Source: RevenueBase Database · checked Sep 29, 2026
22	Prescient Security	Strong evidence	Nashville, TN, United StatesHQ checked Sep 29, 2026	201-500	272 contacts →
	Strong evidence “Prescient Security is a global cybersecurity and compliance firm delivering risk-based audits, advanced penetration testing, and end-to-end framework support.” Source: RevenueBase Database · checked Sep 29, 2026
23	Portswigger	Strong evidence	Knutsford, United KingdomHQ checked Sep 29, 2026	51-200	267 contacts →
	Strong evidence “PortSwigger is a global leader in the creation of software tools for security testing of web applications.” Source: RevenueBase Database · checked Sep 29, 2026
24	Qualitrix	Indirect evidence	Bengaluru, IndiaHQ checked Sep 29, 2026	201-500	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 29, 2026
25	Securin INC	Partial evidence	Albuquerque, NM, United StatesHQ checked Sep 29, 2026	201-500	244 contacts →
	Partial evidence “Securin is obsessed with helping leaders continuously improve their security posture.” 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 security testing 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 software security testing companies.
Partial evidence: Its own public description names part of software security testing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name software security testing 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 4,876 software security testing companies worldwide

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Software security testing companies worldwide at a glance

As of Sep 29, 2026

24.1%Verified-email coverage

14.5Average contacts per company

1-10Median size (employees)

2.3%Largest-city concentration · London

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

2,856

11-50

1,548

51-200

350

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 software security testing 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 software security testing companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “software security testing 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 software security testing 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 software security testing 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, 17,088 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 security testing companies by location

33 lists · largest first

Every Software security testing companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 security testing 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 software security testing companies are there worldwide?

RevenueBase identified 4,876 software security testing 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?

Private Sector, headquartered in Worldwide, tops this list with the largest team on record.

Which country has the most software security testing companies?

The United States leads with 901 companies, followed by India (659) and the United Kingdom (301). Every software security testing companies list by country and city is linked on this page.

Which city has the most software security testing companies?

London leads with 110 headquartered companies, followed by Pune (59) and Hyderabad (56).

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 17,088 verified decision-maker contacts tracked across these 4,876 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.