Company lists · Data refreshed September 2026

Top 25 Managed IT services companies based in the United States

Name: Managed IT services companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 12,556 companies tracked

RevenueBase identified 12,556 managed IT services companies headquartered in the United States as of September 2026 and tracks 214,559 professional contacts across them, including 84,324 with verified work emails and 80,919 with mobile numbers. New York is the largest hub.

This list covers managed IT services 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. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

12,556Companies

214,559Contacts tracked

84,324Verified emails

80,919Mobile numbers

Unlock all 12,556 companies Free signup · no credit card · 500 free credits

The 25 largest managed IT services companies based in the United States

Ranked by team size

Top 25 of 12,556 managed IT services companies based in the United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names managed IT services companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Comcast BusinessIndirect evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	10001+	8,242
	Source: company website · checked Sep 5, 2026
2	CompucomIndirect evidence	Fort Mill, SC, United StatesHQ checked Sep 5, 2026	5,001-10,000	7,753
	“Unleash Your Digital Workplace Potential with Compucom To be at the forefront of your industry, having the right technology is non-negotiable.” Source: company website · checked Sep 5, 2026
3	SHI International CorpIndirect evidence	Somerset, NJ, United StatesHQ checked Sep 5, 2026	5,001-10,000	6,734
	“Think of SHI as your personal technology concierge.” Source: company website · checked Sep 5, 2026
4	PresidioIndirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	1,001-5,000	3,798
	“At Presidio, speed and quality meet technology and innovation.” Source: company website · checked Sep 5, 2026
5	CBTSIndirect evidence	Cincinnati, OH, United StatesHQ checked Sep 5, 2026	1,001-5,000	2,211
	“CBTS serves enterprise and midmarket clients in all industries across North America.” Source: company website · checked Sep 5, 2026
6	GURUStrong evidence	Rockville, MD, United StatesHQ checked Sep 5, 2026	n/a	1,906
	“Established in 1995, GURU is an IT managed service provider that specializes in infrastructure support, systems integration, data architecture, data hosting, and cloud services.” Source: company website · checked Sep 5, 2026
7	Eplus INCPartial evidence	Herndon, VA, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,749
	“ePlus is a customer-first, services-led, results-driven and trusted industry leader that helps organizations secure, modernize, optimize, and scale every aspect of their IT…” Source: company website · checked Sep 5, 2026
8	DMIPartial evidence	Mclean, VA, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,683
	“DMI is a leading provider of digital services and technology solutions with a focus on end-to-end managed services, including managed mobility, cloud, cybersecurity, network…” Source: company website · checked Sep 5, 2026
9	ThriveIndirect evidence	Foxborough, MA, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,432
	“Thrive is a NextGen 3.0 global technology outsourcing provider that empowers small and mid-market organizations to transform their technology into a strategic advantage.” Source: company website · checked Sep 5, 2026
10	Marco TechnologiesIndirect evidence	St. Cloud, MN, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,203
	“At Marco, we're all about making technology work for you (and not the other way around).” Source: company website · checked Sep 5, 2026
11	COX BusinessIndirect evidence	Atlanta, GA, United StatesHQ checked Sep 5, 2026	10001+	1,094
	“Cox Business provides a wide range of technology solutions for businesses of all sizes with reliable, scalable products and services tailored to your unique needs.” Source: company website · checked Sep 5, 2026
12	SolugenixPartial evidence	Brea, CA, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,063
	“Technology only matters when it helps the business run better.” Source: company website · checked Sep 5, 2026
13	SynoptekPartial evidence	Costa Mesa, CA, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,037
	“Synoptek is a leading global managed services provider and technology consulting firm that delivers transformative business results.” Source: company website · checked Sep 5, 2026
14	GDTPartial evidence	Dallas, TX, United StatesHQ checked Sep 5, 2026	501-1,000	1,032
	“As an award-winning, global IT solutions provider, we are changing the nature of transformation.” Source: company website · checked Sep 5, 2026
15	CCB TechnologyPartial evidence	Racine, WI, United StatesHQ checked Sep 5, 2026	n/a	1,018
	“CCB Technology provides award-winning IT support and project services to customers nationwide.” Source: company website · checked Sep 5, 2026
16	IT By DesignPartial evidence	Freehold, NJ, United StatesHQ checked Sep 5, 2026	501-1,000	928
	“For more than 20 years, IT By Design has been the growth partner MSPs trust to scale profitably.” Source: company website · checked Sep 5, 2026
17	Buchanan TechnologiesPartial evidence	Grapevine, TX, United StatesHQ checked Sep 5, 2026	501-1,000	818
	“As a leading IT consulting and outsourcing services firm, Buchanan Technologies helps organizations across North America turn their business technology into a powerful competitive…” Source: company website · checked Sep 5, 2026
18	Sentinel TechnologiesPartial evidence	Downers Grove, IL, United StatesHQ checked Sep 5, 2026	501-1,000	779
	“When it comes to achieving a tangible ROI and sustainable performance from your IT environment, Sentinel takes the lead.” Source: company website · checked Sep 5, 2026
19	ApptixIndirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	n/a	762
	“Apptix was acquired by Fusion Connect in 2016.” Source: company website · checked Sep 5, 2026
20	Q3 TechnologiesStrong evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	501-1,000	761
	“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: company website · checked Sep 5, 2026
21	TPXIndirect evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	1,001-5,000	751
	“TPx is the reliable sidekick every growing business deserves, powering your tech while you take the lead.” Source: company website · checked Sep 5, 2026
22	System Soft TechnologiesStrong evidence	Tampa, FL, United StatesHQ checked Sep 5, 2026	501-1,000	732
	“System Soft Group is an IT services and solutions company that helps organizations overcome limited managed IT capabilities and achieve key technology goals.” Source: company website · checked Sep 5, 2026
23	LogicalisusIndirect evidence	Troy, MI, United StatesHQ checked Sep 5, 2026	501-1,000	710
	“We are Architects of Change.” Source: company website · checked Sep 5, 2026
24	RED RiverIndirect evidence	Chantilly, VA, United StatesHQ checked Sep 5, 2026	501-1,000	709
	“Red River brings together the ideal combination of talent, partners and products to disrupt the status quo in technology and drive success for business and government in ways…” Source: company website · checked Sep 5, 2026
25	NovatechIndirect evidence	Nashville, TN, United StatesHQ checked Sep 5, 2026	501-1,000	700
	“Since 1998, Novatech has been transforming how businesses operate by delivering end-to-end technology solutions nationwide.” Source: company website · checked Sep 5, 2026

Showing 25 of 12,556 managed IT services companies based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 84,324 reachable decision-makers.

Free signup · no credit card

See all 12,556 companies

Managed IT services companies based in the United States at a glance

As of Sep 5, 2026

1-10Median size (employees)

New YorkLargest hub · 352 HQs

80,919Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

7,010

11-50

4,258

51-200

942

201-500

189

501-1,000

1,001-5,000

5,001-10,000

10001+

Verified emails by last verification

0–30

78,376

31–60

5,228

61–90

90–180

180+

641

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 managed IT services companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “managed IT services companies”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among managed IT services companies, 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 an evidence 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, 84,324 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 5, 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.

Managed IT services companies by metro

Frequently asked

How many managed IT services companies are there based in the United States?

RevenueBase identified 12,556 managed IT services companies 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?

Comcast Business, headquartered in Philadelphia, tops this list with the largest team on record.

Which city has the most managed IT services companies?

New York leads with 352 headquartered companies, followed by Houston (242) and Chicago (153).

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 84,324 verified decision-maker contacts tracked across these 12,556 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 5, 2026.

Ready to reach these companies? Verified emails and direct dials for all 12,556 managed IT services companies based in the United States. Start with a free account, no credit card.

Get the full list

Related lists

Managed IT services companies by geography

Browse the directory

Browse: Companies home · All United States lists · All Managed IT services companies lists · New lists

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 SmartSearch, 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.