Company lists · Data refreshed September 2026

Top 25 Legacy system modernization firms based in Houston, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 135 companies tracked

RevenueBase identified 135 company matches for legacy system modernization firms associated with Houston, United States as of September 2026 and tracks 7,671 professional contacts across them, including 1,623 with verified work emails. Across the United States, New York is the largest hub for this category (178 companies); Houston has 135.

This list covers company matches for legacy system modernization firms associated with Houston, 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 20, 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 20, 2026 How this list was built

135Companies

7,671Contacts tracked

1,623Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest legacy system modernization firms based in Houston, United States

Ranked by team size

Top 25 of 135 company matches for legacy system modernization firms based in Houston, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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	Techwave	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	1,001-5,000	2,140 contacts →
	Exact match “Techwave is a leading global IT and engineering services and solutions company revolutionizing digital transformation.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2	Searce INC	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,511 contacts →
	Exact match “Searce is an AI-native, engineering-led modern tech consultancy that empowers clients to futurify by delivering real business outcomes.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3	Advent Global Solutions	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	1,001-5,000	585 contacts →
	Exact match “Welcome to Advent Global Solutions!” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4	Sierra Digital INC	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	501-1,000	379 contacts →
	Exact match “Sierra Digital is a Digital Transformation leader in Automation, Acceleration and X+O Integration.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	Sira Consulting, An INC 5000 Company	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	201-500	329 contacts →
	Exact match “SiRA Consulting is a Certified MBE consulting company that was founded in 2012.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6	Hestabit	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	201-500	304 contacts →
	Exact match “HestaBit Technologies is a next-generation IT consulting and product engineering company helping enterprises, startups, and governments harness the power of AI, enterprise…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7	Mobisoft Infotech	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	201-500	265 contacts →
	Exact match “Mobisoft Infotech is a digital product development company striving to deliver value, excellence, and sustainable business growth through digital innovation, transformation, and…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8	Smartbridge	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	51-200	245 contacts →
	Exact match “Smartbridge is a US-based firm and NOT associated with TheSmartBridge Educational Services or SmartInternz.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9	Tekrevol	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	201-500	201 contacts →
	Exact match “TekRevol is a global digital transformation company offering product development services, innovation strategy, and technical consultancy.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	Veridian Tech Solutions, INC	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	51-200	150 contacts →
	Exact match “Veridian Tech Solution Inc.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11	Silicus, An Infogain Company	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	501-1,000	138 contacts →
	Exact match “Silicus, an Infogain company is a cloud transformation services firm, focused on helping enterprises drive cloud-enabled business innovation & modernization, deploy…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	Qadworks	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	51-200	95 contacts →
	Exact match “QADWorks is a Texas based IT consulting company founded in 2019.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13	Value Global	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	51-200	85 contacts →
	Exact match “Value Global focuses on transforming your business challenges to intelligent solutions.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14	Osscube	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	201-500	75 contacts →
	Exact match “Established in 2008, OSSCube, a division of Happiest Minds, is the digital transformation and modernization partner for global enterprise to fast growing start-ups, helping them…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15	Cloudgen LLC	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	51-200	73 contacts →
	Exact match “When the world’s largest banks, retailers, and government agencies seek digital innovation, they rely on CloudGen.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16	Prorsum Technologies	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	51-200	58 contacts →
	Exact match “Prorsum Technologies founded in 2016 offers high quality professionals and solutions to help clients with their complex technology needs.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17	Sixlogs Technologies	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	11-50	51 contacts →
	Exact match “Sixlogs Technologies is a certified Salesforce Consulting and ISV Partner, AWS Partner, and Digital Transformation experts.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18	Innowise An Ilink Digital Company	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	51-200	44 contacts →
	Exact match “InnoWise is an IT company, committed to powering digital transformation using our expertise with next generation technologies.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19	Mark III Systems	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	51-200	42 contacts →
	Exact match “Mark Systems is a leading digital and IT transformation solutions provider with a long, rich history of providing “full stack” technology solutions to enterprises and service…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20	Digital Glyde	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	11-50	40 contacts →
	Exact match “Digital Gylde was established in 2020 with roots ranging back to 2004.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21	C4workx LLC	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	51-200	37 contacts →
	Exact match “C4Workx LLC is a boutique consultancy (founded 2020) specializing in digital transformation through technology conceptualization, engineering and delivery.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22	Zirlen Technologies INC	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	11-50	31 contacts →
	Exact match “About Zirlen Zirlen Technologies, Inc.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23	EPC Group.Net	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	201-500	30 contacts →
	Exact match “EPC Group is a nationally recognized Microsoft consulting firm helping organizations modernize, migrate, secure, automate, and scale Microsoft cloud, AI, collaboration, and data…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24	Data Strategies Interchange, LLC	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	11-50	28 contacts →
	Exact match “Data Strategies Interchange is a leading provider of large-scale data migration and conversion services to Fortune 500 and Global companies that need to upgrade from older…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25	Qubryx	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	11-50	25 contacts →
	Exact match “At Qubryx, we are a cloud-first, future-focused technology consulting firm that helps organizations accelerate their adoption of best-in-class software development and…” Recorded in the RevenueBase company graph · Sep 20, 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 “legacy system modernization 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 135 legacy system modernization firms based in Houston, United States

See the full list, filter by size, metro and specialty, and access 1,623 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

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

As of Sep 20, 2026

21.2%Verified-email coverage

56.8Average contacts per company

11-50Median size (employees)

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 Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 135 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 Houston, United States whose business descriptions match “legacy system modernization 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 1,623 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 20, 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.

Legacy system modernization 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 “legacy system modernization firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many legacy system modernization firms are there based in Houston, United States?

RevenueBase identified 135 company matches for legacy system modernization firms associated with Houston, 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?

Techwave 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 legacy system modernization firms?

New York leads the United States with 178 company records, 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 limited free results with 500 credits to start. Upgrading provides access to the 1,623 professional contacts with verified work emails tracked across these 135 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 20, 2026.

Ready to reach these companies? Verified emails and direct dials for all 135 legacy system modernization firms based in Houston, United States. Start with a free account, no credit card.

Download this list →

Related lists

Legacy system modernization firms by geography

Browse the directory

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.