Company lists · Data refreshed September 2026

Top 25 Custom business software companies based in the United States

Name: Custom business software 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 2,853 companies tracked

RevenueBase identified 2,853 custom business software companies headquartered in the United States as of September 2026 and tracks 65,040 professional contacts across them, including 23,610 with verified work emails. New York is the largest hub.

This list covers custom business software 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

2,853Companies

65,040Contacts tracked

23,610Verified emails

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

Ranked by team size

Top 25 of 2,853 custom business software 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 business software 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	INFOR	Partial evidence	New York, NY, United StatesHQ checked Sep 21, 2026	10001+	19,389 contacts →
	Partial evidence “Infor is a global leader in business cloud software products for companies in industry specific markets.” Source: RevenueBase Database · checked Sep 21, 2026
2	Epicor	Indirect evidence	Austin, TX, United StatesHQ checked Sep 21, 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 21, 2026
3	Cloud Software Group	Strong evidence	Fort Lauderdale, FL, United StatesHQ checked Sep 21, 2026	10001+	1,975 contacts →
	Strong evidence “Cloud Software Group enables our customers to evolve, compete and succeed leveraging our software franchises for and across data, automation, insight, and collaboration.” Source: RevenueBase Database · checked Sep 21, 2026
4	ECI Software Solutions	Indirect evidence	Westlake, TX, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,411 contacts →
	Indirect evidence “For 25+ years, ECI has helped businesses around the world grow with industry-specific, cloud-based ERP.” Source: RevenueBase Database · checked Sep 21, 2026
5	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
6	Lawson Software	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 2026	1,001-5,000	862 contacts →
	Indirect evidence “Our mission is to make your company successful!” Source: RevenueBase Database · checked Sep 21, 2026
7	Xtglobal, INC	Indirect evidence	Plano, TX, United StatesHQ checked Sep 21, 2026	501-1,000	841 contacts →
	Indirect evidence “Founded in 1998, XTGlobal, Inc.” Source: RevenueBase Database · checked Sep 21, 2026
8	CAI Software, LLC	Partial evidence	Lincoln, RI, United StatesHQ checked Sep 21, 2026	501-1,000	604 contacts →
	Partial evidence “CAI Software, LLC delivers mission-critical, production-oriented software to Manufacturers and Food & Beverage producers, processors, and distributors.” Source: RevenueBase Database · checked Sep 21, 2026
9	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
10	Softura	Partial evidence	Farmington Hills, MI, United StatesHQ checked Sep 21, 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 21, 2026
11	Advantive	Partial evidence	Tampa, FL, United StatesHQ checked Sep 21, 2026	201-500	497 contacts →
	Partial evidence “We make purpose-built software for specialty manufacturing and distribution businesses that streamline complex processes, optimize operations visibility and throughput, and drive…” Source: RevenueBase Database · checked Sep 21, 2026
12	Velosio	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 21, 2026	501-1,000	430 contacts →
	Indirect evidence “Velosio is a leading Microsoft partner delivering business transformation through Microsoft Dynamics 365, Power Platform, Azure, and the broader Microsoft Cloud.” Source: RevenueBase Database · checked Sep 21, 2026
13	Argusoft	Partial evidence	Newark, CA, United StatesHQ checked Sep 21, 2026	201-500	413 contacts →
	Partial evidence “Argusoft is a software solution design company.” Source: RevenueBase Database · checked Sep 21, 2026
14	Vision33	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	201-500	401 contacts →
	Indirect evidence “Vision33 Inc.” Source: RevenueBase Database · checked Sep 21, 2026
15	Solbeg	Partial evidence	Jersey City, NJ, United StatesHQ checked Sep 21, 2026	1,001-5,000	371 contacts →
	Partial evidence “Solbeg is a world-class partner in consulting, business process automation, technology, and software engineering services.” Source: RevenueBase Database · checked Sep 21, 2026
16	Apolis	Indirect evidence	Santa Monica, CA, United StatesHQ checked Sep 21, 2026	501-1,000	338 contacts →
	Indirect evidence “Apolis Rises is your trusted partner in driving business growth through tailored ERP solutions, managed services, and expert staffing support.” Source: RevenueBase Database · checked Sep 21, 2026
17	Customer Analytics, LLC	Strong evidence	Verona, WI, United StatesHQ checked Sep 21, 2026	501-1,000	334 contacts →
	Strong 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 21, 2026
18	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
19	DSD Business Systems	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	51-200	307 contacts →
	Indirect evidence “Founded in 1984 in San Diego, DSD Business Systems is an award-winning technology partner with 45 offices across North America, serving small- to medium-sized organizations.” Source: RevenueBase Database · checked Sep 21, 2026
20	Amvotech Solutions INC	Indirect evidence	Oakbrook Terrace, IL, United StatesHQ checked Sep 21, 2026	501-1,000	281 contacts →
	Indirect evidence “In this competitive world, what your company needs is a winning horse.” Source: RevenueBase Database · checked Sep 21, 2026
21	Integrant, INC	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	201-500	280 contacts →
	Partial 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
22	Ignitetech	Partial evidence	Austin, TX, United StatesHQ checked Sep 21, 2026	51-200	273 contacts →
	Partial evidence “As the leader in Enterprise Software, our powerful IgniteTech platform helps organizations grow revenue, optimize expense and accelerate transformation through a model where every…” Source: RevenueBase Database · checked Sep 21, 2026
23	ITG Software, INC	Indirect evidence	Cincinnati, OH, United StatesHQ checked Sep 21, 2026	201-500	249 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
24	Daysmart	Partial evidence	Ann Arbor, MI, United StatesHQ checked Sep 21, 2026	201-500	245 contacts →
	Partial evidence “We help businesses power their growth with software designed for their specific industry.” Source: RevenueBase Database · checked Sep 21, 2026
25	Cargas Systems	Strong evidence	Lancaster, PA, United StatesHQ checked Sep 21, 2026	51-200	232 contacts →
	Strong evidence “Cargas is an employee-owned software company offering ERP and CRM software from Acumatica, Microsoft, Sage, Salesforce, and HubSpot, as well as custom-developed 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 business software 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 business software companies.
Partial evidence: Its own public description names part of custom business software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name custom business software 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 2,853 custom business software companies based in the United States

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

As of Sep 21, 2026

36.3%Verified-email coverage

22.8Average contacts per company

1-10Median size (employees)

3.4%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

1,544

11-50

893

51-200

319

201-500

501-1,000

1,001-5,000

5,001-10,000

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 2,853 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 business software 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 business software 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 business software 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 business software 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, 23,610 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 business software companies by metro

Custom business software companies in New York98
Custom business software companies in Houston64
Custom business software companies in Austin54
Custom business software companies in Dallas44
Custom business software companies in Miami40
Custom business software companies in Los Angeles38
Custom business software companies in Chicago36
Custom business software companies in Sheridan31
Custom business software companies in San Francisco28
Custom business software companies in Charlotte27
Custom business software companies in Tampa27
Custom business software companies in Atlanta26

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 business software 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 business software companies are there based in the United States?

RevenueBase identified 2,853 custom business software 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?

INFOR, headquartered in New York, tops this list with the largest team on record.

Which city has the most custom business software companies?

New York leads with 98 headquartered companies, followed by Houston (64) and Austin (54).

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 23,610 verified decision-maker contacts tracked across these 2,853 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.