Company lists · Data refreshed September 2026

Top 23 Legacy system modernization firms based in Reston, United States

Name: Legacy system modernization firms based in Reston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 33 companies tracked

RevenueBase identified 33 legacy system modernization firms headquartered in Reston, United States as of September 2026 and tracks 2,005 professional contacts across them, including 796 with verified work emails. New York is the largest hub.

This list covers legacy system modernization firms headquartered in Reston, 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 20, 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 20, 2026 86% judged on-target in blind review

33Companies

2,005Contacts tracked

796Verified emails

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The 23 largest legacy system modernization firms based in Reston, United States

Ranked by team size

Top 23 of 33 legacy system modernization firms based in Reston, United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to legacy system modernization firms: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Brillient Corporation	Indirect evidence	Reston, VA, United StatesHQ checked Sep 20, 2026	1,001-5,000	455 contacts →
	Indirect evidence “Brillient is an award-winning Full Spectrum Digital Transformation company enabling clients to transform through the continuum of analog, to digital, to analytics leading to…” Source: RevenueBase Database · checked Sep 20, 2026
2	1rivet	Indirect evidence	Reston, VA, United StatesHQ checked Sep 20, 2026	201-500	415 contacts →
	Indirect evidence “1Rivet is an award-winning, international IT Strategy & Consulting firm headquartered in the Washington, D.C.” Source: RevenueBase Database · checked Sep 20, 2026
3	Excelacom	Indirect evidence	Reston, VA, United StatesHQ checked Sep 20, 2026	501-1,000	306 contacts →
	Indirect evidence “Excelacom is a global Software and Consulting company headquartered in Reston, VA, just outside of Washington, D.C, with offices across North America and Europe and a Technology…” Source: RevenueBase Database · checked Sep 20, 2026
4	Techsur Solutions	Indirect evidence	Reston, VA, United StatesHQ checked Sep 20, 2026	51-200	120 contacts →
	Indirect evidence “TechSur Solutions (SDB · 8(a) · EDWOSB · WOSB) is a strategic provider of emerging technology and digital transformation services for federal agencies, specializing in application…” Source: RevenueBase Database · checked Sep 20, 2026
5	Pureintegration	Indirect evidence	Reston, VA, United StatesHQ checked Sep 20, 2026	51-200	105 contacts →
	Indirect evidence “The epitome of ‘punching above our weight’, pureIntegration is the secret weapon you may never have heard of.” Source: RevenueBase Database · checked Sep 20, 2026
6	Oteemo INC	Indirect evidence	Reston, VA, United StatesHQ checked Sep 20, 2026	51-200	88 contacts →
	Indirect evidence “Oteemo is a technology and business transformation consulting firm that combines deep technical expertise with human-centered design principles to deliver innovative solutions.” Source: RevenueBase Database · checked Sep 20, 2026
7	KAT Enterprise LLC	Indirect evidence	Reston, VA, United StatesHQ checked Sep 20, 2026	51-200	69 contacts →
	Indirect evidence “KAT Enterprise is a trusted Microsoft Solutions Partner, delivering enterprise-grade digital transformation services across federal, commercial, and SMB sectors since 2015.” Source: RevenueBase Database · checked Sep 20, 2026
8	Aderas, INC	Indirect evidence	Reston, VA, United StatesHQ checked Sep 20, 2026	51-200	49 contacts →
	Indirect evidence “Aderas specializes in implementing, extending, managing, and tuning enterprise applications, databases, applications servers as well as custom software and IT development.” Source: RevenueBase Database · checked Sep 20, 2026
9	Adroitts	Indirect evidence	Reston, VA, United StatesHQ checked Sep 20, 2026	51-200	43 contacts →
	Indirect evidence “Adroitts is a technology and consulting company that specializes in providing innovative IT solutions and services to businesses across various industries.” Source: RevenueBase Database · checked Sep 20, 2026
10	Datamaxis, INC	Partial evidence	Reston, VA, United StatesHQ checked Sep 20, 2026	51-200	42 contacts →
	Partial evidence “DATAMAXIS takes pride in delivering a wide range of business IT modernization, data analytics, and technology management services.” Source: RevenueBase Database · checked Sep 20, 2026
11	Workmethods Solutions INC	Indirect evidence	Reston, VA, United StatesHQ checked Sep 20, 2026	51-200	41 contacts →
	Indirect evidence “At workMETHODS (WMS), we help enterprises automate repetitive work, cut error rates by up to 70%, and reduce costs by nearly 30% through business process automation (BPA) and…” Source: RevenueBase Database · checked Sep 20, 2026
12	Snowrelic INC	Indirect evidence	Reston, VA, United StatesHQ checked Sep 20, 2026	11-50	39 contacts →
	Indirect evidence “Snowrelic Inc was founded by technology professionals with a vision to provide quality and cost-effective Modern IT solutions.” Source: RevenueBase Database · checked Sep 20, 2026
13	DS Technologies INC	Indirect evidence	Reston, VA, United StatesHQ checked Sep 20, 2026	11-50	32 contacts →
	Indirect evidence “DS Technologies Inc - SUCCESS IS OUR DUTY We are a company that provides innovative, transformative IT services and solutions.” Source: RevenueBase Database · checked Sep 20, 2026
14	Basecamp Consulting And Solutions LLC	Partial evidence	Reston, VA, United StatesHQ checked Sep 20, 2026	11-50	26 contacts →
	Partial evidence “Basecamp Consulting and Solutions LLC is a Reston, Virginia–based IT services firm specializing in Enterprise Modernization and Transformation for the U.S.” Source: RevenueBase Database · checked Sep 20, 2026
15	Quest1	Partial evidence	Reston, VA, United StatesHQ checked Sep 20, 2026	11-50	25 contacts →
	Partial evidence “We design and build the data and AI systems enterprises run on, with the partners shaping tomorrow's stack already at the table.” Source: RevenueBase Database · checked Sep 20, 2026
16	Husl Digital	Partial evidence	Reston, VA, United StatesHQ checked Sep 20, 2026	11-50	19 contacts →
	Partial evidence “HUSL Digital is an AI-enabled digital modernization partner serving growth-focused and mission-driven organizations operating in complex environments.” Source: RevenueBase Database · checked Sep 20, 2026
17	Rockwoods INC	Indirect evidence	Reston, VA, United StatesHQ checked Sep 20, 2026	51-200	15 contacts →
	Indirect evidence “Our team has diverse group of experienced and talented professionals who can deliver everything from individual consulting and training to full-scale re-engineering, software…” Source: RevenueBase Database · checked Sep 20, 2026
18	T. White Parker	Indirect evidence	Reston, VA, United StatesHQ checked Sep 20, 2026	11-50	14 contacts →
	Indirect evidence “T.” Source: RevenueBase Database · checked Sep 20, 2026
19	ASR Tech Group INC	Indirect evidence	Reston, VA, United StatesHQ checked Sep 20, 2026	51-200	11 contacts →
	Indirect evidence “ASR Tech Group, is a digital transformation services provider located in Reston Virginia USA.” Source: RevenueBase Database · checked Sep 20, 2026
20	Agiletrailblazers	Indirect evidence	Reston, VA, United StatesHQ checked Sep 20, 2026	11-50	11 contacts →
	Indirect evidence “AgileTrailblazers is a Northern Virginia based fast growing full-service digital transformation company.” Source: RevenueBase Database · checked Sep 20, 2026
21	Infoapps INC	Indirect evidence	Reston, VA, United StatesHQ checked Sep 20, 2026	51-200	4 contacts →
	Indirect evidence “InfoApps Inc is a digital transformation organization aimed at creating seamless solutions for clients to effectively manage their business operations.” Source: RevenueBase Database · checked Sep 20, 2026
22	Agile Global Solutions LLC	Indirect evidence	Reston, VA, United StatesHQ checked Sep 20, 2026	1-10	3 contacts →
	Indirect evidence “Strategic IT Solutions To Transformation Your Business” Source: RevenueBase Database · checked Sep 20, 2026
23	Avaliance US	Indirect evidence	Reston, WA, United StatesHQ checked Sep 20, 2026	1-10	1 contacts →
	Indirect evidence “Avaliance is an international IT consulting firm since 2010.” Source: RevenueBase Database · checked Sep 20, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: legacy system modernization firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names legacy system modernization firms.
Partial evidence: Its own public description names part of legacy system modernization firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name legacy system modernization firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 23 of 33 legacy system modernization firms based in Reston, United States

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Legacy system modernization firms based in Reston, United States at a glance

As of Sep 20, 2026

39.7%Verified-email coverage

60.8Average contacts per company

51-200Median size (employees)

539.4%Largest-city concentration · New York

Sep 20, 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 Reston, so it is reported there. Company counts and contact totals on this page are exact for Reston, over 33 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 legacy system modernization firms, 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 Reston, United States whose own description of what they do matches “legacy system modernization firms”. 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 legacy system modernization firms), 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 legacy system modernization firms, and records with no verified work email. Companies headquartered outside Reston 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, 796 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 20, 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.

Legacy system modernization firms by metro in the United States

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 legacy system modernization firms, 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 legacy system modernization firms are there based in Reston, United States?

RevenueBase identified 33 legacy system modernization firms headquartered in Reston, 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?

Brillient Corporation, headquartered in Reston, tops this list with the largest team on record.

Which city has the most legacy system modernization firms?

New York leads with 178 headquartered companies, followed by Austin (150) and Houston (135).

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 796 verified decision-maker contacts tracked across these 33 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 20, 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.