Company lists · Data refreshed September 2026

Top 25 Big IT consulting firms based in Herndon, United States

Name: Big IT consulting firms based in Herndon, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 133 companies tracked

RevenueBase identified 133 company matches for big IT consulting firms associated with Herndon, United States as of September 2026 and tracks 5,939 professional contacts across them, including 1,891 with verified work emails. Across the United States, New York is the largest hub for this category (854 companies); Herndon has 133.

This list covers company matches for big IT consulting firms associated with Herndon, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 23, 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 RevenueBase SmartSearch · Exact Recorded Sep 23, 2026 How this list was built

133Companies

5,939Contacts tracked

1,891Verified emails

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The 25 largest big IT consulting firms based in Herndon, United States

Ranked by team size

Top 25 of 133 company matches for big IT consulting firms based in Herndon, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 23, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Eplus INC	Exact match	Herndon, VA, United StatesHQ recorded Sep 23, 2026	1,001-5,000	1,749 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
2	Idexcel	Exact match	Herndon, VA, United StatesHQ recorded Sep 23, 2026	501-1,000	870 contacts →
	Exact match “Idexcel is a Professional Services and Technology Solutions provider specializing in Cloud Services, Cloud Native Services, Data Platforms and Intelligence, Automation & AI.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
3	Softility, INC	Exact match	Herndon, VA, United StatesHQ recorded Sep 23, 2026	201-500	321 contacts →
	Exact match “Softility is a digital transformation technology services company, specializing in innovative solutions across cloud adoption and modernization, data engineering and analytics…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
4	Netimpact Strategies INC	Exact match	Herndon, VA, United StatesHQ recorded Sep 23, 2026	201-500	254 contacts →
	Exact match “NetImpact has been a Trusted Advisor driving impact through digital transformation for the Federal Government for over a decade.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
5	Viitorcloud Technologies	Exact match	Herndon, VA, United StatesHQ recorded Sep 23, 2026	201-500	239 contacts →
	Exact match “Empowering businesses to become future-ready, today!” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
6	Pcm-G	Exact match	Herndon, VA, United StatesHQ recorded Sep 23, 2026	1,001-5,000	176 contacts →
	Exact match “PCM-G is a division of Insight Enterprises, Inc.\| Together, we’ll help you navigate complex IT challenges.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
7	Idea Entity	Exact match	Herndon, VA, United StatesHQ recorded Sep 23, 2026	51-200	145 contacts →
	Exact match “Idea Entity makes ideas real through the application of technology.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
8	Vista Applied Solutions Group INC	Exact match	Herndon, VA, United StatesHQ recorded Sep 23, 2026	201-500	131 contacts →
	Exact match “VASG Inc has a strong reputation as a business and information technology consulting company.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
9	Everestek	Exact match	Herndon, VA, United StatesHQ recorded Sep 23, 2026	51-200	122 contacts →
	Exact match “Everestek is a modern technology services & solutions company where our goal is to help clients with their technology needs.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
10	Indigo IT LLC	Exact match	Herndon, VA, United StatesHQ recorded Sep 23, 2026	51-200	101 contacts →
	Exact match “Founded in 2001, Indigo IT is an award winning information technology consulting and services company.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
11	Globalvox	Exact match	Herndon, VA, United StatesHQ recorded Sep 23, 2026	51-200	97 contacts →
	Exact match “GlobalVox has built its business on solid partnerships with leading technology providers.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
12	Eksource Technologies, INC	Exact match	Herndon, VA, United StatesHQ recorded Sep 23, 2026	51-200	94 contacts →
	Exact match “Founded in 2008, ekSource Technologies is committed to providing value through the effective use of technology.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
13	SSA Tech INC	Exact match	Herndon, VA, United StatesHQ recorded Sep 23, 2026	201-500	70 contacts →
	Exact match “SSA Tech Inc is an IT Technical consulting solutions and services provider with proven expertise across various technologies.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
14	Reston Consulting Group, INC	Exact match	Herndon, VA, United StatesHQ recorded Sep 23, 2026	51-200	65 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
15	Allwyn Corporation	Exact match	Herndon, VA, United StatesHQ recorded Sep 23, 2026	51-200	52 contacts →
	Exact match “Allwyn Corporation, headquartered in Washington DC, was founded in 2003 with a mission to help customers solve complex technology problems by bringing tools, technologies…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
16	Niha Technologies INC	Exact match	Herndon, VA, United StatesHQ recorded Sep 23, 2026	11-50	50 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
17	Solution Street	Exact match	Herndon, VA, United StatesHQ recorded Sep 23, 2026	51-200	47 contacts →
	Exact match “We are a passionate team of builders and problem solvers!” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
18	Cliff Services INC	Exact match	Herndon, VA, United StatesHQ recorded Sep 23, 2026	51-200	46 contacts →
	Exact match “Cliff Services is a technology and professional services group, founded in the UK in 2008 and operating across the UK, USA, Ireland, Canada, Australia and India, with UAE and…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
19	Infoserv LLC	Exact match	Herndon, VA, United StatesHQ recorded Sep 23, 2026	51-200	44 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
20	Technik, INC	Exact match	Herndon, VA, United StatesHQ recorded Sep 23, 2026	51-200	35 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
21	IT Partners, INC	Exact match	Herndon, VA, United StatesHQ recorded Sep 23, 2026	51-200	34 contacts →
	Exact match “Privately held and founded in 1993, IT Partners Inc.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
22	Infotek Solutions INC	Exact match	Herndon, VA, United StatesHQ recorded Sep 23, 2026	11-50	32 contacts →
	Exact match “Infotek Solutions Inc is IT Consulting, Training & Manpower Staffing Company renowned for services and business solutions that are built around our clients need.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
23	Oran INC	Exact match	Herndon, VA, United StatesHQ recorded Sep 23, 2026	51-200	29 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
24	CAN Softtech INC	Exact match	Herndon, VA, United StatesHQ recorded Sep 23, 2026	51-200	28 contacts →
	Exact match “At CAN Softtech Inc, we empower organizations to thrive in a digital-first world with cutting-edge technology solutions.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
25	SV Professionals	Exact match	Herndon, VA, United StatesHQ recorded Sep 23, 2026	51-200	26 contacts →
	Exact match “SV Professionals is an Information Technology consulting practice that fuses Information System’s and business understanding into one solution.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “big IT consulting firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 133 big IT consulting firms based in Herndon, United States

See the full list, filter by size, metro and specialty, and access 1,891 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Big IT consulting firms based in Herndon, United States at a glance

As of Sep 23, 2026

31.8%Verified-email coverage

44.7Average contacts per company

11-50Median size (employees)

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Herndon, so it is reported there. Company counts and contact totals on this page are exact for Herndon, over 133 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with Herndon, United States whose business descriptions match “big IT consulting firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,891 professional contacts with verified work emails across the full matched dataset. 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 23, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Big IT consulting firms by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “big IT consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 133 company matches for big IT consulting firms associated with Herndon, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Eplus INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most big IT consulting firms?

New York leads the United States with 854 company records, followed by Houston (534) and Dallas (423). Herndon has 133.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,891 professional contacts with verified work emails tracked across these 133 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 23, 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 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.