Company lists · Data refreshed September 2026

Top 25 IT services and consulting companies based in Washington, United States

Name: IT services and consulting companies based in Washington, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 380 companies tracked

RevenueBase identified 380 company matches for IT services and consulting companies associated with Washington, United States as of September 2026 and tracks 4,700 professional contacts across them, including 1,266 with verified work emails. Across the United States, New York is the largest hub for this category (1,489 companies); Washington has 380.

This list covers company matches for IT services and consulting companies associated with Washington, 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 27, 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 27, 2026 How this list was built

380Companies

4,700Contacts tracked

1,266Verified emails

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The 25 largest IT services and consulting companies based in Washington, United States

Ranked by team size

Top 25 of 380 company matches for IT services and consulting companies based in Washington, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 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	Vtech Solution INC	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	201-500	576 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2	Computer World Services Corp. CWS	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	201-500	314 contacts →
	Exact match “With over 30 years of hands-on experience, Computer World Services Corp.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3	Techunity, INC	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	51-200	156 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4	DHA Group, INC	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	201-500	135 contacts →
	Exact match “DHA is a full-service Information Technology and Consulting firm dedicated to providing mission-critical services to our Federal Government and commercial clients.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5	Telesolv Consulting	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	201-500	132 contacts →
	Exact match “To become a demand business, an organization must constantly improve the value created by its core business processes.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6	Codice	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	11-50	109 contacts →
	Exact match “CODICE is an information technology and healthcare operations consulting firm focused on delivering customized, high-quality solutions to government agencies and corporations.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7	Networking For Future NFF	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	51-200	108 contacts →
	Exact match “Since 1996, Networking For Future, Inc.(NFF) has been engineering the backbone of mission-critical systems for government and enterprise clients.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8	Blue Water Thinking	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	51-200	91 contacts →
	Exact match “Strategy, Management and Technology Consultancy” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9	Creoal SMX	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	501-1,000	87 contacts →
	Exact match “Acquired by SMX in late 2023, Creoal drives digital transformation through innovative IT solutions that leverage Oracle, Salesforce, and leading-edge technologies (e.g, AI, RPA…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10	Tsymmetry	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	51-200	79 contacts →
	Exact match “You need more than a contractor.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11	Incapsulate	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	201-500	72 contacts →
	Exact match “Incapsulate, now a part of Accenture is a leading management and technology consulting firm with offices in Boston, D.C, and India.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12	Dantech Corporation INC	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	11-50	72 contacts →
	Exact match “As organizations navigate the demands of today’s fast-moving IT landscape, Dantech stands as a trusted partner with the expertise to guide, implement, and optimize technology…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13	Longevity Consulting	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	51-200	71 contacts →
	Exact match “Longevity Consulting is a customer-focused strategic management and IT consulting firm that helps federal agencies achieve mission objectives, improve outcomes, and strengthen…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14	NEW Signature	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	201-500	70 contacts →
	Exact match “New Signature delivers an amazing customer experience to small, mid-sized, enterprise and public sector customers and helps them solve business challenges with Microsoft solutions.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15	Collaborative Mind, LLC Cmind	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	11-50	56 contacts →
	Exact match “CMIND assists its clients strategize, leverage and implement practical solutions to maintain their competitive advantage.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16	Prosource360 Consulting Services	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	51-200	47 contacts →
	Exact match “Founded in 2011, ProSource360 is a premier professional, healthcare and technology services consulting firm supporting federal and commercial markets.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17	Cascades Technologies, INC	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	51-200	47 contacts →
	Exact match “Cascades Technologies is a Professional Consulting and IT Services firm with a commitment to personal and profession integrity.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18	Ideacrew	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	51-200	45 contacts →
	Exact match “IdeaCrew is a full-service consultancy that helps our clients envision, develop and operate enabling technology solutions.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19	Componentwise Solutions INC	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	n/a	43 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20	Trust Consulting Services INC	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	201-500	42 contacts →
	Exact match “We bring an experience unmatched anywhere else, with knowledgeable and thoughtful consultants plus flexible, tailored approaches, all centered on the right outcomes for your…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21	Digidoc, Inc. DBA Public Sector Solutions Group	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	51-200	40 contacts →
	Exact match “The Public Sector Solutions Group is an award-winning Information Technology consulting firm with an emphasis on access to real-time information and an enhanced user experience.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22	Avid Systems LLC	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	51-200	39 contacts →
	Exact match “Avid Systems LLC is a woman-owned Information Technology Services firm based in Washington, DC, with over 20 years of proven expertise in delivering transformative IT solutions.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23	Esentio Technologies	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	11-50	35 contacts →
	Exact match “eSentio Technologies is a leading provider of business and technology consulting and implementation services to the world’s largest law firms.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24	Iron Vine Security	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	51-200	32 contacts →
	Exact match “Iron Vine is now a part of the ECS team!” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25	Hekima	Exact match	Washington, DC, United StatesHQ recorded Sep 27, 2026	11-50	32 contacts →
	Exact match “At Hekima, we’re redefining how organizations approach IT solutions.” Recorded in the RevenueBase company graph · Sep 27, 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 “IT services and consulting companies”. 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 380 IT services and consulting companies based in Washington, United States

See the full list, filter by size, metro and specialty, and access 1,266 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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IT services and consulting companies based in Washington, United States at a glance

As of Sep 27, 2026

26.9%Verified-email coverage

12.4Average contacts per company

1-10Median size (employees)

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

197

11-50

126

51-200

201-500

501-1,000

Email recency for this list is measured across the whole United States list rather than for Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 380 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 Washington, United States whose business descriptions match “IT services and consulting companies” 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 1,266 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 27, 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.

IT services and consulting companies 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 “IT services and consulting companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many IT services and consulting companies are there based in Washington, United States?

RevenueBase identified 380 company matches for IT services and consulting companies associated with Washington, 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?

Vtech Solution 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 IT services and consulting companies?

New York leads the United States with 1,489 company records, followed by Houston (926) and Dallas (734). Washington has 380.

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 1,266 professional contacts with verified work emails tracked across these 380 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 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 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.