Company lists · Data refreshed November 2026

Top 21 Customized software development services based in St. Louis, United States

Name: Customized software development services based in St. Louis, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 41 companies tracked

RevenueBase identified 41 company matches for customized software development services associated with St. Louis, United States as of November 2026 and tracks 597 professional contacts across them, including 148 with verified work emails. Across the United States, New York is the largest hub for this category (524 companies); St. Louis has 41.

This list covers company matches for customized software development services associated with St. Louis, 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 November 6, 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 Nov 6, 2026 How this list was built

41Companies

597Contacts tracked

148Verified emails

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

The 21 largest customized software development services based in St. Louis, United States

Ranked by team size

Top 21 of 41 company matches for customized software development services based in St. Louis, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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	TDK Technologies	Exact match	St. Louis, MO, United StatesHQ recorded Nov 6, 2026	51-200	114 contacts →
	Exact match “TDK Technologies is a people-first technology consulting and custom software development company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Karpel Solutions	Exact match	St. Louis, MO, United StatesHQ recorded Nov 6, 2026	51-200	104 contacts →
	Exact match “Karpel Solutions is a business & government solutions provider that focuses on its clients’ strategic goals through the application of current and cost effective technology.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Unidev	Exact match	St. Louis, MO, United StatesHQ recorded Nov 6, 2026	11-50	37 contacts →
	Exact match “Unidev is a technology consulting company on a mission to achieve extraordinary dreams through ordinary means.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	ZEN Software Solutions INC	Exact match	St. Louis, MO, United StatesHQ recorded Nov 6, 2026	51-200	29 contacts →
	Exact match “Zen Software Solutions Inc is an ISO 9001:2015 and ISO 27001:2013 certified, Global IT Consulting Solutions and Services provider with extensive experience in ERP implementation…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Enliven	Exact match	St. Louis, MO, United StatesHQ recorded Nov 6, 2026	1-10	18 contacts →
	Exact match “Enliven is a software consultancy helping expert professional services firms create healthy and sustainable digital work environments.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Road MAP Technologies, LLC	Exact match	St. Louis, MO, United StatesHQ recorded Nov 6, 2026	11-50	17 contacts →
	Exact match “Road Map is a niche technology services organization focused on solving the most complex business, operational and user experience challenges through the application of technology.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Lelander	Exact match	St. Louis, MO, United StatesHQ recorded Nov 6, 2026	1-10	16 contacts →
	Exact match “Lelander is a custom software consultancy that helps IT leaders navigate and deliver solutions to match company goals, plain and simple.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Bitsatom Technologies	Exact match	St. Louis, MO, United StatesHQ recorded Nov 6, 2026	11-50	16 contacts →
	Exact match “Welcome to our world of software development excellence!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Engage	Exact match	St. Louis, MO, United StatesHQ recorded Nov 6, 2026	11-50	12 contacts →
	Exact match “We’re Engage.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	HPS Software Solutions INC	Exact match	St. Louis, MO, United StatesHQ recorded Nov 6, 2026	11-50	12 contacts →
	Exact match “HPS Software Solutions is a reliable and trusted global software development company with expert and experienced professionals who follow the highest standards to build solutions…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Blue Stingray	Exact match	St. Louis, MO, United StatesHQ recorded Nov 6, 2026	11-50	10 contacts →
	Exact match “We build enterprise-level software solutions including Odoo ERP, e-commerce, cloud applications, and mobile apps.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Keysoft IT	Exact match	St. Louis, MO, United StatesHQ recorded Nov 6, 2026	11-50	9 contacts →
	Exact match “Keysoft IT provides technology solutions to complex business problems to achieve strategic long term goals and profitable short term objectives of business clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Synergy IT Solutions	Exact match	St. Louis, MO, United StatesHQ recorded Nov 6, 2026	51-200	9 contacts →
	Exact match “Company founded in 2002 We provide a full spectrum of IT services Subject matter specialists Project based engagements Applications maintenance Built and leverage a network of…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Happen Technologies	Exact match	St. Louis, MO, United StatesHQ recorded Nov 6, 2026	1-10	7 contacts →
	Exact match “By taking a different approach to building project teams, we've reduced both the risk and the headache and left you with the value.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Oasis Digital Solutions, A Valiantys Company	Exact match	St. Louis, MO, United StatesHQ recorded Nov 6, 2026	11-50	5 contacts →
	Exact match “Oasis Digital develops custom software in St.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Harpoon Technologies	Exact match	St. Louis, MO, United StatesHQ recorded Nov 6, 2026	11-50	3 contacts →
	Exact match “Harpoon Technologies, Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Acuity Digital LLC	Exact match	St. Louis, MO, United StatesHQ recorded Nov 6, 2026	1-10	2 contacts →
	Exact match “Acuity Digital provides custom business software solutions with an emphasis on cloud computing, mobile application development and software security.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Rutz Computer Solutions, INC	Exact match	St. Louis, MO, United StatesHQ recorded Nov 6, 2026	1-10	2 contacts →
	Exact match “Our qualified staff is ready to tackle any of your needs in Business Intelligence, Software Development, CRM & ERP Integrations, IT Support, and much more.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Gaspar Information Technology Consulting	Exact match	St. Louis, MO, United StatesHQ recorded Nov 6, 2026	1-10	1 contacts →
	Exact match “Gaspar Technology Consulting, or G.T.C, is a modern and focused IT and Computer Consultation firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Reikam Labs	Exact match	St. Louis, MO, United StatesHQ recorded Nov 6, 2026	1-10	1 contacts →
	Exact match “Reikam Labs offers innovative and reliable software engineering solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Webenology, INC	Exact match	St. Louis, MO, United StatesHQ recorded Nov 6, 2026	1-10	1 contacts →
	Exact match “Webenology, Inc is a company based out of St.” Recorded in the RevenueBase company graph · Nov 6, 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 “customized software development services”. 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 21 of 41 customized software development services based in St. Louis, United States

See the full list, filter by size, metro and specialty, and access 148 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Customized software development services based in St. Louis, United States at a glance

As of Nov 6, 2026

24.8%Verified-email coverage

14.6Average contacts per company

1-10Median size (employees)

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Email recency for this list is measured across the whole United States list rather than for St. Louis, so it is reported there. Company counts and contact totals on this page are exact for St. Louis, over 41 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 St. Louis, United States whose business descriptions match “customized software development services” 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 148 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 November 6, 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.

Customized software development services 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 “customized software development services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many customized software development services are there based in St. Louis, United States?

RevenueBase identified 41 company matches for customized software development services associated with St. Louis, United States as of November 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?

TDK Technologies 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 customized software development services?

New York leads the United States with 524 company records, followed by Austin (312) and Houston (253). St. Louis has 41.

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 148 professional contacts with verified work emails tracked across these 41 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 November 6, 2026.

Ready to reach these companies? Verified emails and direct dials for all 41 customized software development services based in St. Louis, United States. Start with a free account, no credit card.

Download this list →

Related lists

Customized software development services 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.