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Company lists · Data refreshed September 2026

Top 25 IT consulting services based in Herndon, United States

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 146 companies tracked

RevenueBase identified 146 IT consulting services headquartered in Herndon, United States as of September 2026 and tracks 5,777 professional contacts across them, including 2,135 with verified work emails. New York is the largest hub.

This list covers IT consulting services headquartered in Herndon, 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 4, 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 4, 2026 86% judged on-target in blind review
146Companies
5,777Contacts tracked
2,135Verified emails
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The 25 largest IT consulting services based in Herndon, United States

Ranked by team size
Top 25 of 146 IT consulting services based in Herndon, United States, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names IT consulting services: 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.
#CompanyHeadquartersEmployeesContacts
1
Eplus INCPartial evidence
Herndon, VA, United StatesHQ checked Sep 4, 20261,001-5,0001,783

“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 4, 2026
2
Softility, INCIndirect evidence
Herndon, VA, United StatesHQ checked Sep 4, 2026201-500320

“Softility is a digital transformation technology services company, specializing in innovative solutions across cloud adoption and modernization, data engineering and analytics…”

Source: company website · checked Sep 4, 2026
3
TD Synnex Public SectorIndirect evidence
Herndon, VA, United StatesHQ checked Sep 4, 2026201-500293

“For more than 30 years, TD SYNNEX Public Sector has been dedicated to accelerating public sector growth for technology companies.”

Source: company website · checked Sep 4, 2026
4
Netimpact Strategies INCIndirect evidence
Herndon, VA, United StatesHQ checked Sep 4, 2026201-500253

“NetImpact has been a Trusted Advisor driving impact through digital transformation for the Federal Government for over a decade.”

Source: company website · checked Sep 4, 2026
5
Idea EntityIndirect evidence
Herndon, VA, United StatesHQ checked Sep 4, 202651-200146

“Idea Entity makes ideas real through the application of technology.”

Source: company website · checked Sep 4, 2026
6
Vista Applied Solutions Group INCPartial evidence
Herndon, VA, United StatesHQ checked Sep 4, 2026201-500131

“VASG Inc has a strong reputation as a business and information technology consulting company.”

Source: company website · checked Sep 4, 2026
7
EverestekIndirect evidence
Herndon, VA, United StatesHQ checked Sep 4, 202651-200118

“Everestek is a modern technology services & solutions company where our goal is to help clients with their technology needs.”

Source: company website · checked Sep 4, 2026
8
Foxhole TechnologyIndirect evidence
Herndon, VA, United StatesHQ checked Sep 4, 202651-200117

“Foxhole Technology is a thought-leading technology firm offering a robust suite of cybersecurity, software development, systems engineering, and test & evaluation solutions for…”

Source: company website · checked Sep 4, 2026
9
Indigo IT LLCStrong evidence
Herndon, VA, United StatesHQ checked Sep 4, 202651-200101

“Founded in 2001, Indigo IT is an award winning information technology consulting and services company.”

Source: company website · checked Sep 4, 2026
10
Eksource Technologies, INCIndirect evidence
Herndon, VA, United StatesHQ checked Sep 4, 202651-20095

“Founded in 2008, ekSource Technologies is committed to providing value through the effective use of technology.”

Source: company website · checked Sep 4, 2026
11
Truestone, LLCIndirect evidence
Herndon, VA, United StatesHQ checked Sep 4, 202651-20094

“Truestone provides full lifecycle, business driven technology and information security-oriented services and solutions across the public and private sectors.”

Source: company website · checked Sep 4, 2026
12
MakparIndirect evidence
Herndon, VA, United StatesHQ checked Sep 4, 202651-20090

“Makpar is a comprehensive professional and technical solutions provider for the Federal government.”

Source: company website · checked Sep 4, 2026
13
SSA Tech INCStrong evidence
Herndon, VA, United StatesHQ checked Sep 4, 2026201-50071

“SSA Tech Inc is an IT Technical consulting solutions and services provider with proven expertise across various technologies.”

Source: company website · checked Sep 4, 2026
14
Reston Consulting Group, INCPartial evidence
Herndon, VA, United StatesHQ checked Sep 4, 202651-20065

“Network Design * Engineering * Integration * Operations * Security RCG has more than 35 years' experience supporting some of the world's largest and most highly visible IT…”

Source: company website · checked Sep 4, 2026
15
Chameleon Consulting Group LLCPartial evidence
Herndon, VA, United StatesHQ checked Sep 4, 202651-20059

“Chameleon Consulting Group, LLC was founded by a small group of professionals with extensive experience in cyber operations, software engineering, data analysis, and physical…”

Source: company website · checked Sep 4, 2026
16
Allwyn CorporationIndirect evidence
Herndon, VA, United StatesHQ checked Sep 4, 202651-20053

“Allwyn Corporation, headquartered in Washington DC, was founded in 2003 with a mission to help customers solve complex technology problems by bringing tools, technologies…”

Source: company website · checked Sep 4, 2026
17
Infoserv LLCPartial evidence
Herndon, VA, United StatesHQ checked Sep 4, 202651-20040

“With a strong team of 100+ consultants with over 12+ years of experience, we have proven ourselves repeatedly at several Fortune 100 as well as Fortune 500 companies, when it…”

Source: company website · checked Sep 4, 2026
18
Sphinx Solutions INCIndirect evidence
Herndon, VA, United StatesHQ checked Sep 4, 202611-5037

“Sphinx Solutions is an entrepreneurial cyber security company that helps private- and public-sector organizations take advantage of solutions that match today’s security…”

Source: company website · checked Sep 4, 2026
19
Synapse Business Systems, INCIndirect evidence
Herndon, VA, United StatesHQ checked Sep 4, 202651-20037
Source: company website · checked Sep 4, 2026
20
Technik, INCIndirect evidence
Herndon, VA, United StatesHQ checked Sep 4, 202651-20035

“Technik, Inc.(Technik), is an 8(a) Certified, ISO 9001:2008 Registered, CMMI L3 Appraised professional services company, committed to assisting industry and government harness the…”

Source: company website · checked Sep 4, 2026
21
Network DepotPartial evidence
Herndon, VA, United StatesHQ checked Sep 4, 202651-20034

“Network Depot has been serving the DC Metro area since 1991, providing technical support and cybersecurity consulting.”

Source: company website · checked Sep 4, 2026
22
IT Partners, INCPartial evidence
Herndon, VA, United StatesHQ checked Sep 4, 202651-20034

“Privately held and founded in 1993, IT Partners Inc.”

Source: company website · checked Sep 4, 2026
23
Infotek Solutions INCStrong evidence
Herndon, VA, United StatesHQ checked Sep 4, 202611-5032

“Infotek Solutions Inc is IT Consulting, Training & Manpower Staffing Company renowned for services and business solutions that are built around our clients need.”

Source: company website · checked Sep 4, 2026
24
Oran INCIndirect evidence
Herndon, VA, United StatesHQ checked Sep 4, 202651-20029
Source: company website · checked Sep 4, 2026
25
CAN Softtech INCIndirect evidence
Herndon, VA, United StatesHQ checked Sep 4, 202651-20027

“At CAN Softtech Inc, we empower organizations to thrive in a digital-first world with cutting-edge technology solutions.”

Source: company website · checked Sep 4, 2026

Showing 25 of 146 IT consulting services based in Herndon, United States

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IT consulting services based in Herndon, United States at a glance

As of Sep 4, 2026
11-50Median size (employees)
New YorkLargest hub · 976 HQs
Contacts with mobile numbers
Sep 4, 2026Data refreshed

Companies by employee count

1-10
45
11-50
48
51-200
37
201-500
11
501-1,000
1
1,001-5,000
2

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Herndon, over 146 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 consulting services, 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 Herndon, United States whose own description of what they do matches “IT consulting services”. 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 IT consulting services, and records with no verified work email. Companies headquartered outside Herndon 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, 2,135 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 4, 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 consulting services by metro in the United States

Frequently asked

How many IT consulting services are there based in Herndon, United States?

RevenueBase identified 146 IT consulting services headquartered in Herndon, 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?

Eplus INC, headquartered in Herndon, tops this list with the largest team on record.

Which city has the most IT consulting services?

New York leads with 976 headquartered companies, followed by Houston (633) and Atlanta (521).

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 2,135 verified decision-maker contacts tracked across these 146 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 4, 2026.

Ready to reach these companies? Verified emails and direct dials for all 146 IT consulting services based in Herndon, United States. Start with a free account, no credit card.

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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 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.

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