Company lists · Data refreshed September 2026

Top 25 Custom SaaS developers based in the United States

Name: Custom SaaS developers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 6,040 companies tracked

RevenueBase identified 6,040 custom SaaS developers headquartered in the United States as of September 2026 and tracks 84,955 professional contacts across them, including 20,826 with verified work emails and 11,545 with mobile numbers. New York is the largest hub.

This list covers custom SaaS developers 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 29, 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 29, 2026 86% judged on-target in blind review

6,040Companies

84,955Contacts tracked

20,826Verified emails

11,545Mobile numbers

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The 25 largest custom SaaS developers based in the United States

Ranked by team size

Top 25 of 6,040 custom SaaS developers based in the United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to custom SaaS developers: 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	Exadel	Indirect evidence	Walnut Creek, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,874 contacts →
	Indirect 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 29, 2026
2	dev.pro	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 29, 2026	501-1,000	997 contacts →
	Indirect 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 29, 2026
3	Trinetix	Partial evidence	Brentwood, TN, United StatesHQ checked Sep 29, 2026	1,001-5,000	902 contacts →
	Partial evidence “Trinetix is a global custom software development partner that brings ambitious ideas to life.” Source: RevenueBase Database · checked Sep 29, 2026
4	Folio3 Software	Indirect evidence	San Mateo, CA, United StatesHQ checked Sep 29, 2026	501-1,000	846 contacts →
	Indirect 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 29, 2026
5	Tanisha Systems, INC	Partial evidence	Boston, MA, United StatesHQ checked Sep 29, 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 29, 2026
6	Xtglobal, INC	Indirect evidence	Plano, TX, United StatesHQ checked Sep 29, 2026	501-1,000	841 contacts →
	Indirect evidence “Founded in 1998, XTGlobal, Inc.” Source: RevenueBase Database · checked Sep 29, 2026
7	Fingent	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	501-1,000	551 contacts →
	Partial 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 29, 2026
8	Droisys	Indirect evidence	Las Vegas, NV, United StatesHQ checked Sep 29, 2026	201-500	544 contacts →
	Indirect 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 29, 2026
9	Enterprise Solutions INC	Indirect evidence	Warrenville, IL, United StatesHQ checked Sep 29, 2026	501-1,000	540 contacts →
	Indirect evidence “Enterprise Solutions, Inc.” Source: RevenueBase Database · checked Sep 29, 2026
10	Softura	Indirect evidence	Farmington Hills, MI, United StatesHQ checked Sep 29, 2026	201-500	534 contacts →
	Indirect 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 29, 2026
11	STG	Indirect evidence	Salt Lake City, UT, United StatesHQ checked Sep 29, 2026	51-200	508 contacts →
	Indirect evidence “Your Business Technology Partner.” Source: RevenueBase Database · checked Sep 29, 2026
12	CG Infinity	Indirect evidence	Plano, TX, United StatesHQ checked Sep 29, 2026	201-500	479 contacts →
	Indirect evidence “People First + Driven to Transform Our people-first approach to technology offers best-in-class service and success rates.” Source: RevenueBase Database · checked Sep 29, 2026
13	Sigma Infosolutions LTD	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 29, 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 29, 2026
14	Svam International INC	Indirect evidence	Great Neck, NY, United StatesHQ checked Sep 29, 2026	1,001-5,000	423 contacts →
	Indirect evidence “We bring #TheSVAMDifference by leveraging innovative thinking, a systematic approach to ensure Digital Transformation & deliver returns on technology investments for our clients.” Source: RevenueBase Database · checked Sep 29, 2026
15	Lohika	Indirect evidence	San Mateo, CA, United StatesHQ checked Sep 29, 2026	501-1,000	422 contacts →
	Indirect evidence “Lohika is now part of Capgemini.” Source: RevenueBase Database · checked Sep 29, 2026
16	CUBIX	Partial evidence	Suite 120 #3, FL, United StatesHQ checked Sep 29, 2026	201-500	417 contacts →
	Partial 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 29, 2026
17	IT Labs	Indirect evidence	Palm Beach Gardens, FL, United StatesHQ checked Sep 29, 2026	201-500	415 contacts →
	Indirect evidence “Creating a Better Future, Together Founded in 2005 in Los Angeles, IT Labs brings skilled tech professionals together to develop high-performing software development teams.” Source: RevenueBase Database · checked Sep 29, 2026
18	Argusoft	Indirect evidence	Newark, CA, United StatesHQ checked Sep 29, 2026	201-500	413 contacts →
	Indirect evidence “Argusoft is a software solution design company.” Source: RevenueBase Database · checked Sep 29, 2026
19	Affirma	Indirect evidence	Bellevue, WA, United StatesHQ checked Sep 29, 2026	501-1,000	397 contacts →
	Indirect evidence “Affirma is an award-winning full service technology services firm based out of Bellevue, WA.” Source: RevenueBase Database · checked Sep 29, 2026
20	Solbeg	Indirect evidence	Jersey City, NJ, United StatesHQ checked Sep 29, 2026	1,001-5,000	371 contacts →
	Indirect evidence “Solbeg is a world-class partner in consulting, business process automation, technology, and software engineering services.” Source: RevenueBase Database · checked Sep 29, 2026
21	First Line Software	Indirect evidence	Cambridge, MA, United StatesHQ checked Sep 29, 2026	201-500	359 contacts →
	Indirect evidence “First Line Software is an AI-Native Engineering Company and a Select Partner in the Anthropic Claude Partner Network.” Source: RevenueBase Database · checked Sep 29, 2026
22	Feathersoft	Indirect evidence	Ontario, CA, United StatesHQ checked Sep 29, 2026	201-500	355 contacts →
	Indirect evidence “Feathersoft (A ThinkBio.AI® Company) is a Global Provider of IT Solution, delivering superior consulting services for developing and implementing solutions for enterprises.” Source: RevenueBase Database · checked Sep 29, 2026
23	SJ Innovation LLC	Indirect evidence	New York, United StatesHQ checked Sep 29, 2026	51-200	341 contacts →
	Indirect evidence “Established in 2004, SJ Innovation has completed more than a decade in the software industry.” Source: RevenueBase Database · checked Sep 29, 2026
24	Cts, INC	Indirect evidence	Birmingham, AL, United StatesHQ checked Sep 29, 2026	201-500	338 contacts →
	Indirect evidence “Since 1993, CTS has provided solutions to enterprise, mid-market, and emerging companies across a variety of industries, including energy and utilities, financial services…” Source: RevenueBase Database · checked Sep 29, 2026
25	Customer Analytics, LLC	Partial evidence	Verona, WI, United StatesHQ checked Sep 29, 2026	501-1,000	334 contacts →
	Partial evidence “Customer Analytics, for over 20 years, has been in the business of helping clients succeed at what they do, by developing customized software solutions to meet and solve their…” Source: RevenueBase Database · checked Sep 29, 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 SaaS developers. 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 SaaS developers.
Partial evidence: Its own public description names part of custom SaaS developers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name custom SaaS developers. 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 6,040 custom SaaS developers based in the United States

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Custom SaaS developers based in the United States at a glance

As of Sep 29, 2026

24.5%Verified-email coverage

13.6%Mobile-number coverage

14.1Average contacts per company

11-50Median size (employees)

4.0%Largest-city concentration · New York

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

2,944

11-50

2,082

51-200

798

201-500

139

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 32.0d

8,6940–30

11,22931–60

64661–90

1390–180

244180+

Company record updated

Median 92.0d

00–30

11,12331–60

28,26561–90

40,27290–180

5,295180+

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 SaaS developers, 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 SaaS developers”. 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 SaaS developers), 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 SaaS developers, 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, 20,826 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 29, 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 SaaS developers 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 SaaS developers, 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 SaaS developers are there based in the United States?

RevenueBase identified 6,040 custom SaaS developers 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?

Exadel, headquartered in Walnut Creek, tops this list with the largest team on record.

Which city has the most custom SaaS developers?

New York leads with 241 headquartered companies, followed by Austin (158) and Houston (114).

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 20,826 verified decision-maker contacts tracked across these 6,040 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 29, 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.