Company lists · Data refreshed September 2026
Top 25 IT infrastructure and security companies based in Boston, United States
RevenueBase identified 74 IT infrastructure and security companies headquartered in Boston, United States as of September 2026 and tracks 1,843 professional contacts across them, including 757 with verified work emails. Across the United States, New York is the largest hub for this category (457 companies); Boston has 74.
This list covers IT infrastructure and security companies headquartered in Boston, 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 27, 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.
The 25 largest IT infrastructure and security companies based in Boston, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 761 contacts → | ||||
Partial evidence “Q3 Technologies is a leading global technology and managed IT services provider, offering end-to-end digital transformation solutions, including custom software, AI solutions, web…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 2 | 309 contacts → | ||||
Partial evidence “Cynet’s unified, AI-powered cybersecurity platform brings together a full suite of security capabilities in a single, simple solution, backed by 24x7 SOC support.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 3 | 87 contacts → | ||||
Partial evidence “Empowering Your Business with AI-Driven Managed IT & Consulting Solutions As a trusted Microsoft Partner headquartered in Boston, TrnDigital specializes in Managed IT Services and…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 4 | 82 contacts → | ||||
Partial evidence “Maitsys is a dynamic IT consulting company with a global presence, specializing in digital transformation, cloud solutions, SAP migration/support and cybersecurity.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 5 | 81 contacts → | ||||
Indirect evidence “INNO4 is a leading nationwide technology services company.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 6 | 57 contacts → | ||||
Partial evidence “EiQ, a pioneer in hybrid security as a service, is transforming how mid-market organizations build enterprise-class security programs.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 7 | 35 contacts → | ||||
Partial evidence “Harvard Partners is a management consulting firm focused on helping companies more effectively leverage their IT investment.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 8 | 31 contacts → | ||||
Strong evidence “At Abusix, we empower businesses, ISPs, and email service providers with cutting-edge security solutions to safeguard digital infrastructure.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 9 | 24 contacts → | ||||
Partial evidence “Pixel Machinery is a unique managed IT services provider based in downtown Boston.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 10 | 22 contacts → | ||||
Strong evidence “iuvo is a strategic IT consulting partner helping organizations turn technology into a driver of business growth, operational efficiency, security, and long-term transformation.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 11 | 15 contacts → | ||||
Indirect evidence “For over 20 years, The Charlton Group, Inc.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 12 | 14 contacts → | ||||
Strong evidence “Is a cybersecurity engineering company that delivers live operational and executive oversight of IT infrastructure and cybersecurity posture to enterprise customers globally.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 13 | 14 contacts → | ||||
Indirect evidence “Proinf is a complete suite of Cybersecurity and Professional Services Provider.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 14 | 14 contacts → | ||||
Indirect evidence “Raina works with clients to identify business and technology needs and respond with customized solutions that significantly leverage investment and produces desired growth.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 15 | 13 contacts → | ||||
Partial evidence “Eos Systems, a leader in cyber security and technology delivery services, has been helping clients solve complex technology challenges for over 25 years.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 16 | 13 contacts → | ||||
Partial evidence “Full Armor Corporation is a leader in Cyber Security and in System & Group Policy Management.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 17 | 9 contacts → | ||||
Partial evidence “Option One Technologies is a next-generation managed IT and cloud platform democratizing the best-in-class enterprise technology to deliver next-gen technology, innovation…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 18 | 9 contacts → | ||||
Partial evidence “As a full-service IT firm in Boston we help businesses make smart technology decisions.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 19 | 8 contacts → | ||||
Partial evidence “At Tailwind IT, we accelerate growth through secure, human-driven solutions and services for global mid-sized companies.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 20 | 7 contacts → | ||||
Partial evidence “The PureStake founding team has been building infrastructure and networks for 20 years.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 21 | 7 contacts → | ||||
Indirect evidence “Better solutions by design.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 22 | 7 contacts → | ||||
Partial evidence “Since 2004, Vault America has safeguarded customers’ data and their businesses with automated and scalable, industry compliant cyber and data security services, aligned under our…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 23 | 4 contacts → | ||||
Indirect evidence “HybridValley is your technology consulting partner in all areas of information technology.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 24 | 4 contacts → | ||||
Indirect evidence “Since its inception in Buckley Technology Group (BTG) has been a leading provider of financial industry solutions - offering superior consulting, implementation, and support…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 25 | 4 contacts → | ||||
Indirect evidence “Provide technology consulting services to help companies design, execute and deliver the latest technology solutions.” 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: IT infrastructure and security 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 IT infrastructure and security companies.
- Partial evidence
- Its own public description names part of IT infrastructure and security companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name IT infrastructure and security 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 74 IT infrastructure and security companies based in Boston, United States
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IT infrastructure and security companies based in Boston, United States at a glance
As of Sep 27, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Boston, so it is reported there. Company counts and contact totals on this page are exact for Boston, over 74 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 IT infrastructure and security 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.
- What qualifies
- Companies headquartered in Boston, United States whose own description of what they do matches “IT infrastructure and security 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 IT infrastructure and security 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 IT infrastructure and security companies, and records with no verified work email. Companies headquartered outside Boston 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, 757 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.
IT infrastructure and security companies by metro in the United States
- IT infrastructure and security companies in New York457
- IT infrastructure and security companies in Houston320
- IT infrastructure and security companies in Dallas216
- IT infrastructure and security companies in Atlanta214
- IT infrastructure and security companies in Austin208
- IT infrastructure and security companies in Chicago207
- IT infrastructure and security companies in Miami194
- IT infrastructure and security companies in Los Angeles161
- IT infrastructure and security companies in San Diego133
- IT infrastructure and security companies in Washington133
- IT infrastructure and security companies in San Francisco130
- IT infrastructure and security companies in Tampa130
- IT infrastructure and security companies in Denver114
- IT infrastructure and security companies in Charlotte113
- IT infrastructure and security companies in Orlando102
- IT infrastructure and security companies in Phoenix98
- IT infrastructure and security companies in Irvine97
- IT infrastructure and security companies in San Jose96
- IT infrastructure and security companies in San Antonio94
- IT infrastructure and security companies in Las Vegas93
- IT infrastructure and security companies in Plano86
- IT infrastructure and security companies in Arlington85
- IT infrastructure and security companies in Columbia82
- IT infrastructure and security companies in Seattle79
- IT infrastructure and security companies in Frisco73
- IT infrastructure and security companies in Sheridan73
- IT infrastructure and security companies in Indianapolis69
- IT infrastructure and security companies in Wilmington69
- IT infrastructure and security companies in Herndon68
- IT infrastructure and security companies in Irving68
- IT infrastructure and security companies in Fort Lauderdale63
- IT infrastructure and security companies in Richmond63
- IT infrastructure and security companies in Reston62
- IT infrastructure and security companies in Ashburn61
- IT infrastructure and security companies in Columbus61
- IT infrastructure and security companies in Fairfax61
- IT infrastructure and security companies in Raleigh61
- IT infrastructure and security companies in Portland60
- IT infrastructure and security companies in Alpharetta56
- IT infrastructure and security companies in Mclean56
- IT infrastructure and security companies in Alexandria55
- IT infrastructure and security companies in Minneapolis55
- IT infrastructure and security companies in Cincinnati53
- IT infrastructure and security companies in Baltimore50
- IT infrastructure and security companies in Nashville48
- IT infrastructure and security companies in Scottsdale48
- IT infrastructure and security companies in Jacksonville47
- IT infrastructure and security companies in Newark46
- IT infrastructure and security companies in Pittsburgh46
- IT infrastructure and security companies in Rockville45
- IT infrastructure and security companies in Sacramento45
- IT infrastructure and security companies in Boca Raton43
- IT infrastructure and security companies in Louisville43
- IT infrastructure and security companies in Salt Lake City41
- IT infrastructure and security companies in Dover40
- IT infrastructure and security companies in Santa Clara39
- IT infrastructure and security companies in Springfield39
- IT infrastructure and security companies in Greenville38
- IT infrastructure and security companies in Philadelphia38
- IT infrastructure and security companies in Princeton38
- IT infrastructure and security companies in Troy38
- IT infrastructure and security companies in Kansas City36
- IT infrastructure and security companies in Leesburg36
- IT infrastructure and security companies in Albuquerque35
- IT infrastructure and security companies in Naperville35
- IT infrastructure and security companies in Schaumburg35
- IT infrastructure and security companies in Birmingham34
- IT infrastructure and security companies in Knoxville34
- IT infrastructure and security companies in Oklahoma City34
- IT infrastructure and security companies in Colorado Springs33
- IT infrastructure and security companies in Fort Worth33
- IT infrastructure and security companies in Omaha33
- IT infrastructure and security companies in Baton Rouge32
- IT infrastructure and security companies in St Louis32
- IT infrastructure and security companies in Tucson32
- IT infrastructure and security companies in Chantilly31
- IT infrastructure and security companies in Rochester30
- IT infrastructure and security companies in Vienna30
- IT infrastructure and security companies in Cleveland29
- IT infrastructure and security companies in Grand Rapids29
- IT infrastructure and security companies in West Palm Beach29
- IT infrastructure and security companies in Bellevue28
- IT infrastructure and security companies in Huntsville28
- IT infrastructure and security companies in Mckinney28
- IT infrastructure and security companies in Manassas27
- IT infrastructure and security companies in Pleasanton27
- IT infrastructure and security companies in Sterling27
- IT infrastructure and security companies in Fremont26
- IT infrastructure and security companies in Gaithersburg26
- IT infrastructure and security companies in Reno26
- IT infrastructure and security companies in Tulsa26
- IT infrastructure and security companies in Duluth25
- IT infrastructure and security companies in Marietta25
- IT infrastructure and security companies in Overland Park25
- IT infrastructure and security companies in Richardson25
- IT infrastructure and security companies in Sarasota25
- IT infrastructure and security companies in Virginia Beach25
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 IT infrastructure and security 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 IT infrastructure and security companies are there based in Boston, United States?
RevenueBase identified 74 IT infrastructure and security companies headquartered in Boston, 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?
Q3 Technologies, headquartered in Boston, tops this list with the largest team on record.
Which city in the United States has the most IT infrastructure and security companies?
New York leads the United States with 457 headquartered companies, followed by Houston (320) and Dallas (216). Boston has 74.
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 757 verified decision-maker contacts tracked across these 74 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.
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