Company lists · Data refreshed September 2026

Top 25 Enterprise software support services based in the United States

RevenueBase identified 3,350 enterprise software support services headquartered in the United States as of September 2026 and tracks 51,017 professional contacts across them, including 12,749 with verified work emails. New York is the largest hub.

This list covers enterprise software support services 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 28, 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 28, 2026 86% judged on-target in blind review
3,350Companies
51,017Contacts tracked
12,749Verified emails
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The 25 largest enterprise software support services based in the United States

Ranked by team size
Top 25 of 3,350 enterprise software support services based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to enterprise software support services: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceNew York, NY, United StatesHQ checked Sep 28, 20265,001-10,0004,608 contacts →

Partial evidence

“For over 40 years, CGS has enabled global enterprises, regional companies, and government agencies to drive breakthrough performance through business applications, enterprise…”

Source: RevenueBase Database · checked Sep 28, 2026
2Strong evidenceLas Vegas, NV, United StatesHQ checked Sep 28, 20261,001-5,0002,022 contacts →

Strong evidence

“Rimini Street, Inc.(Nasdaq: RMNI), a Russell Company, is a global leader in end-to-end third-party enterprise software support, managed services and Agentic AI ERP innovation…”

Source: RevenueBase Database · checked Sep 28, 2026
3Indirect evidenceSan Jose, CA, United StatesHQ checked Sep 28, 20261,001-5,0001,364 contacts →

Indirect evidence

“Our foundation has been one of the top IT service provider companies -accentuating new heights in providing technology services for the connected world.”

Source: RevenueBase Database · checked Sep 28, 2026
4Indirect evidenceNew York, NY, United StatesHQ checked Sep 28, 20261,001-5,000862 contacts →

Indirect evidence

“Our mission is to make your company successful!”

Source: RevenueBase Database · checked Sep 28, 2026
5Indirect evidenceTroy, MI, United StatesHQ checked Sep 28, 20265,001-10,000646 contacts →

Indirect evidence

“Ciber Global is now HTC Global Services with effect from November 30, 2021.”

Source: RevenueBase Database · checked Sep 28, 2026
6Indirect evidenceChevy Chase, MD, United StatesHQ checked Sep 28, 2026501-1,000627 contacts →

Indirect evidence

“Abacus Technology Corporation delivers leading edge, high quality assistance in response to complex technology challenges.”

Source: RevenueBase Database · checked Sep 28, 2026
7Partial evidenceHavertown, PA, United StatesHQ checked Sep 28, 2026501-1,000623 contacts →

Partial evidence

“DecisionOne is the largest global independent technology support organization in the TPM and ISO markets.”

Source: RevenueBase Database · checked Sep 28, 2026
8Partial evidenceWarrenville, IL, United StatesHQ checked Sep 28, 2026501-1,000540 contacts →

Partial evidence

“Enterprise Solutions, Inc.”

Source: RevenueBase Database · checked Sep 28, 2026
9Indirect evidenceHouston, TX, United StatesHQ checked Sep 28, 2026501-1,000523 contacts →

Indirect evidence

“Fluxtek Solutions Inc has established a track record as a leading fast growing IT consulting, services, and outsourcing firm.”

Source: RevenueBase Database · checked Sep 28, 2026
10Indirect evidenceLincoln, RI, United StatesHQ checked Sep 28, 2026201-500472 contacts →

Indirect evidence

“UNICOM, a division of Custom Computer Specialists, is an IT services consultancy that provides technology solutions to corporate, education, government, and healthcare clients…”

Source: RevenueBase Database · checked Sep 28, 2026
11Partial evidenceDublin, OH, United StatesHQ checked Sep 28, 2026501-1,000427 contacts →

Partial evidence

“Founded in ERPA is a leader in enterprise application managed services, managed projects, and managed hosting.”

Source: RevenueBase Database · checked Sep 28, 2026
12Indirect evidenceIselin, NJ, United StatesHQ checked Sep 28, 2026501-1,000369 contacts →

Indirect evidence

“PruTech Solutions Inc.”

Source: RevenueBase Database · checked Sep 28, 2026
13Indirect evidenceMckinney, TX, United StatesHQ checked Sep 28, 202651-200333 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026
14Indirect evidencePlainsboro, NJ, United StatesHQ checked Sep 28, 20261,001-5,000329 contacts →

Indirect evidence

“Lorven Technologies, Inc.”

Source: RevenueBase Database · checked Sep 28, 2026
15Indirect evidenceChaska, MN, United StatesHQ checked Sep 28, 2026201-500328 contacts →

Indirect evidence

“As a partner to some of the world’s largest companies, Bailiwick provides professionally managed technology integration and IT expertise for complex, large-scale IT initiatives.”

Source: RevenueBase Database · checked Sep 28, 2026
16Partial evidenceLewis Center, OH, United StatesHQ checked Sep 28, 20261,001-5,000326 contacts →

Partial evidence

“PCM is an industry-leading added value IT Solutions Provider that develops, delivers and supports world-class IT solutions.”

Source: RevenueBase Database · checked Sep 28, 2026
17Partial evidenceBlue Bell, PA, United StatesHQ checked Sep 28, 2026501-1,000258 contacts →

Partial evidence

“KARYA Technologies is a comprehensive Global Enterprise Solutions Provider.”

Source: RevenueBase Database · checked Sep 28, 2026
18Partial evidenceGreenwood Village, CO, United StatesHQ checked Sep 28, 2026201-500247 contacts →

Partial evidence

“Spinnaker Support delivers independent third-party support and expert services for Oracle, SAP, VMware, and PostgreSQL environments.”

Source: RevenueBase Database · checked Sep 28, 2026
19Partial evidenceLancaster, PA, United StatesHQ checked Sep 28, 202651-200232 contacts →

Partial evidence

“Cargas is an employee-owned software company offering ERP and CRM software from Acumatica, Microsoft, Sage, Salesforce, and HubSpot, as well as custom-developed solutions.”

Source: RevenueBase Database · checked Sep 28, 2026
20Indirect evidenceUniondale, NY, United StatesHQ checked Sep 28, 2026201-500230 contacts →

Indirect evidence

“New York Global Consultants Inc.(NYGCI) is an innovative technology services provider.”

Source: RevenueBase Database · checked Sep 28, 2026
21Partial evidenceEdison, NJ, United StatesHQ checked Sep 28, 2026501-1,000220 contacts →

Partial evidence

“Baanyan is a leading provider of IT Services and Solutions to businesses ranging from mid-sized to global fortune 500 enterprises.”

Source: RevenueBase Database · checked Sep 28, 2026
22Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 28, 2026501-1,000219 contacts →

Indirect evidence

“Nagarro Objectiva (Objectiva) is a subsidiary of Nagarro, Inc.”

Source: RevenueBase Database · checked Sep 28, 2026
23Partial evidenceCincinnati, OH, United StatesHQ checked Sep 28, 2026201-500210 contacts →

Partial evidence

“There’s a reason over businesses have selected Terillium for ERP software implementations, upgrades, managed services, and strategic assessments.”

Source: RevenueBase Database · checked Sep 28, 2026
24Indirect evidenceOverland Park, KS, United StatesHQ checked Sep 28, 2026201-500210 contacts →

Indirect evidence

“Saicon Consultants, Inc.”

Source: RevenueBase Database · checked Sep 28, 2026
25Partial evidencePainesville, OH, United StatesHQ checked Sep 28, 202651-200204 contacts →

Partial evidence

“Dizer Corp is a leader in providing customized solutions to clients for business solutions in a variety of areas including software engineering, application development, technical…”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 25 of 3,350 enterprise software support services based in the United States

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Enterprise software support services based in the United States at a glance

As of Sep 28, 2026
25.0%Verified-email coverage
15.2Average contacts per company
1-10Median size (employees)
2.6%Largest-city concentration · New York
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
1,871
11-50
1,056
51-200
304
201-500
71
501-1,000
26
1,001-5,000
14
5,001-10,000
4
10001+
1

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 3,350 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 enterprise software support services, 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 “enterprise software support services”. 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 enterprise software support services), 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 enterprise software support services, 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, 12,749 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 28, 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.

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 enterprise software support services, 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 enterprise software support services are there based in the United States?

RevenueBase identified 3,350 enterprise software support services 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?

CGS Computer Generated Solutions, headquartered in New York, tops this list with the largest team on record.

Which city has the most enterprise software support services?

New York leads with 87 headquartered companies, followed by Houston (59) and Chicago (45).

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 12,749 verified decision-maker contacts tracked across these 3,350 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 28, 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.