Company lists · Data refreshed September 2026

Top 25 Custom SaaS development companies based in the United States

Name: Custom SaaS development 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 21, 2026 1,290 companies tracked

RevenueBase identified 1,290 custom SaaS development companies headquartered in the United States as of September 2026 and tracks 14,290 professional contacts across them, including 3,509 with verified work emails. New York is the largest hub.

This list covers custom SaaS development 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 21, 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 21, 2026 86% judged on-target in blind review

1,290Companies

14,290Contacts tracked

3,509Verified emails

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The 25 largest custom SaaS development companies based in the United States

Ranked by team size

Top 25 of 1,290 custom SaaS development companies based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to custom SaaS development 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	Trinetix	Strong evidence	Brentwood, TN, United StatesHQ checked Sep 21, 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 21, 2026
2	Droisys	Indirect evidence	Las Vegas, NV, United StatesHQ checked Sep 21, 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 21, 2026
3	Sails Software INC	Indirect evidence	Novi, MI, United StatesHQ checked Sep 21, 2026	501-1,000	314 contacts →
	Indirect evidence “Conceptualized in 2015, Sails Software Inc partners with businesses across several industries in making amazing software products with ever evolving technology and processes.” Source: RevenueBase Database · checked Sep 21, 2026
4	ITX Corp	Strong evidence	Rochester, NY, United StatesHQ checked Sep 21, 2026	201-500	312 contacts →
	Strong evidence “ITX is a custom software development partner trusted for nearly 30 years to deliver solutions that drive real business value.” Source: RevenueBase Database · checked Sep 21, 2026
5	Integrant, INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	201-500	280 contacts →
	Indirect evidence “For more than 35 years, Integrant has engineered enterprise software for companies that can’t afford to get it wrong, in medical devices, life sciences, pharma, financial…” Source: RevenueBase Database · checked Sep 21, 2026
6	Alliance Global Services	Partial evidence	Conshohocken, PA, United StatesHQ checked Sep 21, 2026	10001+	227 contacts →
	Partial evidence “Alliance Global Services is a software development firm that partners with software, technology and information-intensive businesses on their mission critical work.” Source: RevenueBase Database · checked Sep 21, 2026
7	Develux	Strong evidence	Kissimmee, United StatesHQ checked Sep 21, 2026	51-200	223 contacts →
	Strong evidence “Develux offers full-cycle custom software development services that align with your company’s unique needs and goals.” Source: RevenueBase Database · checked Sep 21, 2026
8	Glorium Technologies	Partial evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	201-500	217 contacts →
	Partial evidence “Glorium Technologies is a top-shelf bespoke software development firm, boasting 100+ deployed products.” Source: RevenueBase Database · checked Sep 21, 2026
9	Aezion, INC	Partial evidence	Frisco, TX, United StatesHQ checked Sep 21, 2026	51-200	209 contacts →
	Partial evidence “As one of the premiere custom software providers in Dallas, Fort Worth and the DFW metroplex we live by the promise that our word is our bond.We help you solve IT challenges and…” Source: RevenueBase Database · checked Sep 21, 2026
10	Pulse Software Solutions LLC	Strong evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	51-200	207 contacts →
	Strong evidence “Pulse Software Solutions is a Denver-based custom software development firm with a proud history of building internet-based systems since 1998.” Source: RevenueBase Database · checked Sep 21, 2026
11	Syberry	Partial evidence	Austin, TX, United StatesHQ checked Sep 21, 2026	201-500	181 contacts →
	Partial evidence “Syberry Corporation is a global custom software engineering company.” Source: RevenueBase Database · checked Sep 21, 2026
12	Finoit INC	Partial evidence	Irving, TX, United StatesHQ checked Sep 21, 2026	51-200	155 contacts →
	Partial evidence “Finoit is premium full-service software development compant that builds scalable and secure software products for startups and enterprises, helping them drive growth and scale…” Source: RevenueBase Database · checked Sep 21, 2026
13	Saasvaap INC	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	51-200	153 contacts →
	Indirect evidence “At Saasvaap, we specialize in delivering next-generation software solutions that help businesses simplify, scale, and succeed.” Source: RevenueBase Database · checked Sep 21, 2026
14	Effone	Strong evidence	Santa Clara, CA, United StatesHQ checked Sep 21, 2026	201-500	139 contacts →
	Strong evidence “EffOne was founded by a team of Software Engineers in 1996, as a California Corporation with the mission of providing custom software development services.” Source: RevenueBase Database · checked Sep 21, 2026
15	White Rabbit Group	Partial evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	51-200	135 contacts →
	Partial evidence “White Rabbit Group is a software development agency with a highly diverse and creative team that takes an idea through development and into scale.” Source: RevenueBase Database · checked Sep 21, 2026
16	Appwrk IT Solutions	Indirect evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	51-200	131 contacts →
	Indirect evidence “Introducing APPWRK IT Solutions: Your Partner for Innovative Digital IT Solutions!” Source: RevenueBase Database · checked Sep 21, 2026
17	Agicent Technologies	Partial evidence	New York, NY, United StatesHQ checked Sep 21, 2026	51-200	126 contacts →
	Partial evidence “Top Outsource software development and App Development Company.” Source: RevenueBase Database · checked Sep 21, 2026
18	Redblink	Indirect evidence	Danville, CA, United StatesHQ checked Sep 21, 2026	51-200	125 contacts →
	Indirect evidence “RedBlink is an IT Solutions Company Headquartered in the San Francisco Bay Area.” Source: RevenueBase Database · checked Sep 21, 2026
19	Outcode Software	Partial evidence	Draper, UT, United StatesHQ checked Sep 21, 2026	51-200	120 contacts →
	Partial evidence “Outcode Software provides full-scale software development, data analytics, and a range of consulting services from cloud to system architecture.” Source: RevenueBase Database · checked Sep 21, 2026
20	Datanetiix Solutions INC	Partial evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	51-200	111 contacts →
	Partial evidence “Datanetiix is a One-Stop-Solutions provider for your software development, business analytics & IT needs.” Source: RevenueBase Database · checked Sep 21, 2026
21	Softxpert	Partial evidence	Anaheim, CA, United StatesHQ checked Sep 21, 2026	51-200	107 contacts →
	Partial evidence “Softxpert is a global Software Development Company that was originally established with a basic mission to provide for a real need in the market for quality software applications…” Source: RevenueBase Database · checked Sep 21, 2026
22	Devsquad	Partial evidence	Salt Lake City, UT, United StatesHQ checked Sep 21, 2026	51-200	99 contacts →
	Partial evidence “DevSquad is made up of a team of over 80 elite developers focused on helping successful entrepreneurs take their SaaS ideas from concept to reality.” Source: RevenueBase Database · checked Sep 21, 2026
23	Spark Technologies	Indirect evidence	Calexico, CA, United StatesHQ checked Sep 21, 2026	51-200	99 contacts →
	Indirect evidence “Our goal is very clear: We have to apply all of our I.T.” Source: RevenueBase Database · checked Sep 21, 2026
24	Krish Services Group	Indirect evidence	Chagrin Falls, OH, United StatesHQ checked Sep 21, 2026	51-200	94 contacts →
	Indirect evidence “Krish Services Group: Your Strategic Partner for Modernizing and Scaling Software and Cloud Solutions Founded in 2011, Krish Services Group has transcended its Cleveland roots to…” Source: RevenueBase Database · checked Sep 21, 2026
25	Code Upscale	Partial evidence	New York, NY, United StatesHQ checked Sep 21, 2026	51-200	90 contacts →
	Partial evidence “At Code Upscale, we specialize in turning business ideas into reality through custom technology solutions.” Source: RevenueBase Database · checked Sep 21, 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 development 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 SaaS development companies.
Partial evidence: Its own public description names part of custom SaaS development companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name custom SaaS development 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 1,290 custom SaaS development companies based in the United States

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Custom SaaS development companies based in the United States at a glance

As of Sep 21, 2026

24.6%Verified-email coverage

11.1Average contacts per company

1-10Median size (employees)

4.3%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

719

11-50

404

51-200

141

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,290 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 custom SaaS development 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 SaaS development 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 SaaS development 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 SaaS development 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, 3,509 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 21, 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 development companies by metro

Custom SaaS development companies in New York55
Custom SaaS development companies in Austin46
Custom SaaS development companies in Sheridan34
Custom SaaS development companies in Miami28
Custom SaaS development companies in Los Angeles27

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 development 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 SaaS development companies are there based in the United States?

RevenueBase identified 1,290 custom SaaS development 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?

Trinetix, headquartered in Brentwood, tops this list with the largest team on record.

Which city has the most custom SaaS development companies?

New York leads with 55 headquartered companies, followed by Austin (46) and Sheridan (34).

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 3,509 verified decision-maker contacts tracked across these 1,290 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 21, 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.