Company lists · Data refreshed September 2026

Top 25 Custom software engineering companies based in the United States

Name: Custom software engineering companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 8,989 companies tracked

RevenueBase identified 8,989 custom software engineering companies headquartered in the United States as of September 2026 and tracks 129,451 professional contacts across them, including 29,983 with verified work emails and 16,436 with mobile numbers. New York is the largest hub.

This list covers custom software engineering companies headquartered in the 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 24, 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 24, 2026 86% judged on-target in blind review

8,989Companies

129,451Contacts tracked

29,983Verified emails

16,436Mobile numbers

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

The 25 largest custom software engineering companies based in the United States

Ranked by team size

Top 25 of 8,989 custom software engineering companies based in the United States, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to custom software engineering companies: 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	Epicor	Indirect evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	1,001-5,000	5,802 contacts →
	Indirect evidence “We’re here for the hard-working businesses that keep the world turning.” Source: RevenueBase Database · checked Sep 24, 2026
2	Exadel	Partial evidence	Walnut Creek, CA, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,874 contacts →
	Partial evidence “Exadel is a leading global software consulting and development company that looks beyond the code to maximize the technology-driven business impact our partners want to make.” Source: RevenueBase Database · checked Sep 24, 2026
3	Mobile Programming	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,462 contacts →
	Partial evidence “Mobile Programming LLC was started with the mission to provide “Economic as well as Efficient” software solutions.” Source: RevenueBase Database · checked Sep 24, 2026
4	Pragma	Strong evidence	Miami, FL, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,416 contacts →
	Strong evidence “Pragma is a Custom Software Development and Digital Transformation company founded 30 years ago to improve people's lives by transforming businesses.” Source: RevenueBase Database · checked Sep 24, 2026
5	Trigent Software INC	Partial evidence	Southborough, MA, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,379 contacts →
	Partial evidence “Trigent is a global leader in software solutions, headquartered in Southborough, MA, with development centers in Boston, Bangalore.” Source: RevenueBase Database · checked Sep 24, 2026
6	Relevantz	Strong evidence	Alpharetta, GA, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,164 contacts →
	Strong evidence “We are in the business of custom software engineering.” Source: RevenueBase Database · checked Sep 24, 2026
7	In Time TEC	Indirect evidence	Meridian, ID, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,139 contacts →
	Indirect evidence “In Time Tec is a platform dedicated to Creating Abundance.” Source: RevenueBase Database · checked Sep 24, 2026
8	Brain Station 23	Indirect evidence	Springfield, VA, United StatesHQ checked Sep 24, 2026	501-1,000	1,053 contacts →
	Indirect evidence “Brain Station 23 is at the forefront of global digital transformation, delivering state-of-the-art technology solutions designed to propel businesses into the future.” Source: RevenueBase Database · checked Sep 24, 2026
9	dev.pro	Strong evidence	Charlotte, NC, United StatesHQ checked Sep 24, 2026	501-1,000	997 contacts →
	Strong evidence “Dev.Pro helps innovative technology companies scale their business by leveraging our software engineering expertise to support them every step of the way.” Source: RevenueBase Database · checked Sep 24, 2026
10	Trinetix	Strong evidence	Brentwood, TN, United StatesHQ checked Sep 24, 2026	1,001-5,000	902 contacts →
	Strong evidence “Trinetix is a global custom software development partner that brings ambitious ideas to life.” Source: RevenueBase Database · checked Sep 24, 2026
11	Folio3 Software	Partial evidence	San Mateo, CA, United StatesHQ checked Sep 24, 2026	501-1,000	846 contacts →
	Partial evidence “Folio3 is a California based software development company that helps entrepreneurs and large corporations build innovative, world class software solutions by providing offshore…” Source: RevenueBase Database · checked Sep 24, 2026
12	Tanisha Systems, INC	Partial evidence	Boston, MA, United StatesHQ checked Sep 24, 2026	1,001-5,000	844 contacts →
	Partial evidence “Tanisha Systems, founded in 2002 in Massachusetts-USA, is a leading provider of Custom Application Development and end-to-end IT Services to clients globally.” Source: RevenueBase Database · checked Sep 24, 2026
13	Daffodil Software	Strong evidence	Grandville, MI, United StatesHQ checked Sep 24, 2026	501-1,000	727 contacts →
	Strong evidence “Daffodil Software is a leading software engineering partner that’s empowering 100+ organizations across the globe with innovative solutions, unparalleled execution capabilities…” Source: RevenueBase Database · checked Sep 24, 2026
14	Dash Technologies INC	Indirect evidence	Dublin, OH, United StatesHQ checked Sep 24, 2026	201-500	605 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 24, 2026
15	Fingent	Strong evidence	New York, NY, United StatesHQ checked Sep 24, 2026	501-1,000	551 contacts →
	Strong evidence “Fingent, an award-winning and ISO 27001:2013-certified custom software development company, is a trusted partner for businesses seeking strategic IT solutions.” Source: RevenueBase Database · checked Sep 24, 2026
16	Gemini Consulting & Services	Indirect evidence	Saint Louis, MO, United StatesHQ checked Sep 24, 2026	501-1,000	549 contacts →
	Indirect evidence “Gemini Consulting & Services (GCS) is a leading provider of technology solutions.” Source: RevenueBase Database · checked Sep 24, 2026
17	Droisys	Partial evidence	Las Vegas, NV, United StatesHQ checked Sep 24, 2026	201-500	544 contacts →
	Partial evidence “Droisys is an innovation technology company, with a reputation of delivering top engineering projects and teams to meet, execute, and solve complex business challenges & deliver…” Source: RevenueBase Database · checked Sep 24, 2026
18	Softura	Partial evidence	Farmington Hills, MI, United StatesHQ checked Sep 24, 2026	201-500	534 contacts →
	Partial evidence “Softura is an organization that specializes in providing state-of-the-art software solutions on a wide range of platforms to simplify any un-scalable process.” Source: RevenueBase Database · checked Sep 24, 2026
19	Solution Analysts	Partial evidence	Delmar, DE, United StatesHQ checked Sep 24, 2026	51-200	517 contacts →
	Partial evidence “Solution Analysts, a leading enterprise software development company specializes in offering high-end solutions in the domains of mobile, web, and IoT.” Source: RevenueBase Database · checked Sep 24, 2026
20	STG	Indirect evidence	Salt Lake City, UT, United StatesHQ checked Sep 24, 2026	51-200	508 contacts →
	Indirect evidence “Your Business Technology Partner.” Source: RevenueBase Database · checked Sep 24, 2026
21	Invozone	Partial evidence	Hollywood, FL, United StatesHQ checked Sep 24, 2026	201-500	504 contacts →
	Partial evidence “InvoZone is a leading software development company that excels in industry-focused software development solutions and consulting services across multiple industries.” Source: RevenueBase Database · checked Sep 24, 2026
22	Webandcrafts	Indirect evidence	Washington, DC, United StatesHQ checked Sep 24, 2026	201-500	463 contacts →
	Indirect evidence “Having been known as a website development company in the initial stages, Webandcrafts have now blossomed into a global IT solution provider.” Source: RevenueBase Database · checked Sep 24, 2026
23	Sigma Infosolutions LTD	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 24, 2026	201-500	454 contacts →
	Indirect evidence “Sigma Infosolutions is a prominent provider of technology solutions and services globally, with our headquarters in Irvine, USA, and global offices in Australia & India.” Source: RevenueBase Database · checked Sep 24, 2026
24	Lohika	Indirect evidence	San Mateo, CA, United StatesHQ checked Sep 24, 2026	501-1,000	422 contacts →
	Indirect evidence “Lohika is now part of Capgemini.” Source: RevenueBase Database · checked Sep 24, 2026
25	CUBIX	Strong evidence	Suite 120 #3, FL, United StatesHQ checked Sep 24, 2026	201-500	417 contacts →
	Strong evidence “We are a full-lifecycle software development company expert in development, customization, and integration of complex enterprise software, business intelligence analytics…” Source: RevenueBase Database · checked Sep 24, 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: custom software engineering companies. 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 custom software engineering companies.
Partial evidence: Its own public description names part of custom software engineering companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name custom software engineering companies. 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 25 of 8,989 custom software engineering companies based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 29,983 reachable decision-makers.

Free signup · no credit card

View the full list →

Custom software engineering companies based in the United States at a glance

As of Sep 24, 2026

23.2%Verified-email coverage

12.7%Mobile-number coverage

14.4Average contacts per company

11-50Median size (employees)

4.5%Largest-city concentration · New York

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

4,443

11-50

3,074

51-200

1,156

201-500

212

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 27.0d

22,3600–30

6,77931–60

41061–90

2390–180

411180+

Company record updated

Median 87.0d

00–30

18,33331–60

58,60161–90

45,51490–180

7,003180+

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 custom software engineering companies, 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 the United States whose own description of what they do matches “custom software engineering companies”. 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 custom software engineering companies), 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 custom software engineering companies, and records with no verified work email. Companies headquartered outside United States 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, 29,983 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 24, 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.

Custom software engineering companies by metro

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 custom software engineering companies, 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 custom software engineering companies are there based in the United States?

RevenueBase identified 8,989 custom software engineering companies headquartered in the 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?

Epicor, headquartered in Austin, tops this list with the largest team on record.

Which city has the most custom software engineering companies?

New York leads with 404 headquartered companies, followed by Austin (268) and Houston (188).

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 29,983 verified decision-maker contacts tracked across these 8,989 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 24, 2026.

Ready to reach these companies? Verified emails and direct dials for all 8,989 custom software engineering companies based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Custom software engineering companies 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 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.