Company lists · Data refreshed September 2026

Top 25 Custom enterprise software developers based in the United States

Name: Custom enterprise software 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 28, 2026 3,483 companies tracked

RevenueBase identified 3,483 custom enterprise software developers headquartered in the United States as of September 2026 and tracks 83,918 professional contacts across them, including 27,594 with verified work emails. New York is the largest hub.

This list covers custom enterprise software 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 28, 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 28, 2026 86% judged on-target in blind review

3,483Companies

83,918Contacts tracked

27,594Verified emails

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

The 25 largest custom enterprise software developers based in the United States

Ranked by team size

Top 25 of 3,483 custom enterprise software developers based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to custom enterprise software 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	INFOR	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 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 28, 2026
2	Epicor	Indirect evidence	Austin, TX, United StatesHQ checked Sep 28, 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 28, 2026
3	CGS Computer Generated Solutions	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	5,001-10,000	4,608 contacts →
	Partial evidence “For over 40 years, CGS has enabled global enterprises, regional companies, and government agencies to drive breakthrough performance through business applications, enterprise…” Source: RevenueBase Database · checked Sep 28, 2026
4	Aptean	Strong evidence	Alpharetta, GA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,739 contacts →
	Strong evidence “Aptean's AI-powered, enterprise software serves manufacturers and distributors worldwide across food and beverage, apparel, transportation and more.” Source: RevenueBase Database · checked Sep 28, 2026
5	Leverx	Partial evidence	Miami, FL, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,632 contacts →
	Partial evidence “LeverX is an SAP Gold Partner, SAP Global Strategic Supplier, and enterprise solutions provider for businesses worldwide, including companies from the Fortune 500 list.” Source: RevenueBase Database · checked Sep 28, 2026
6	ECI Software Solutions	Indirect evidence	Westlake, TX, United StatesHQ checked Sep 28, 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 28, 2026
7	Lawson Software	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	1,001-5,000	862 contacts →
	Indirect evidence “Our mission is to make your company successful!” Source: RevenueBase Database · checked Sep 28, 2026
8	Tekshapers	Indirect evidence	Troy, MI, United StatesHQ checked Sep 28, 2026	501-1,000	630 contacts →
	Indirect evidence “Tekshapers was founded in 2009, an MI, USA based Information Technology Company and our primary objective is to provide sophisticated business solutions to a group of companies…” Source: RevenueBase Database · checked Sep 28, 2026
9	CAI Software, LLC	Partial evidence	Lincoln, RI, United StatesHQ checked Sep 28, 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 28, 2026
10	Droisys	Indirect evidence	Las Vegas, NV, United StatesHQ checked Sep 28, 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 28, 2026
11	Enterprise Solutions INC	Partial evidence	Warrenville, IL, United StatesHQ checked Sep 28, 2026	501-1,000	540 contacts →
	Partial evidence “Enterprise Solutions, Inc.” Source: RevenueBase Database · checked Sep 28, 2026
12	Softura	Partial evidence	Farmington Hills, MI, United StatesHQ checked Sep 28, 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 28, 2026
13	Advantive	Partial evidence	Tampa, FL, United StatesHQ checked Sep 28, 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 28, 2026
14	Kastech Software Solutions Group	Partial evidence	Richmond, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	472 contacts →
	Partial evidence “Kastech Software Solutions Group, incorporated in 2007 and headquartered in Richmond, Texas, is a leading global IT services and consulting company delivering technology-driven…” Source: RevenueBase Database · checked Sep 28, 2026
15	Unanet	Indirect evidence	Dulles, VA, United StatesHQ checked Sep 28, 2026	201-500	459 contacts →
	Indirect evidence “Unanet is a leading provider of ERP and CRM solutions purpose-built for Government Contractors, AEC, and Professional Services.” Source: RevenueBase Database · checked Sep 28, 2026
16	Sigma Infosolutions LTD	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 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 28, 2026
17	Velosio	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 28, 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 28, 2026
18	Argusoft	Partial evidence	Newark, CA, United StatesHQ checked Sep 28, 2026	201-500	413 contacts →
	Partial evidence “Argusoft is a software solution design company.” Source: RevenueBase Database · checked Sep 28, 2026
19	Vision33	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	201-500	401 contacts →
	Indirect evidence “Vision33 Inc.” Source: RevenueBase Database · checked Sep 28, 2026
20	Apolis	Indirect evidence	Santa Monica, CA, United StatesHQ checked Sep 28, 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 28, 2026
21	Customer Analytics, LLC	Strong evidence	Verona, WI, United StatesHQ checked Sep 28, 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 28, 2026
22	Delta System & Software, INC	Indirect evidence	Mckinney, TX, United StatesHQ checked Sep 28, 2026	51-200	333 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
23	DSD Business Systems	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 28, 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 28, 2026
24	Katalyst Software Services Limited	Indirect evidence	Evanston, IL, United StatesHQ checked Sep 28, 2026	501-1,000	281 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
25	Amvotech Solutions INC	Indirect evidence	Oakbrook Terrace, IL, United StatesHQ checked Sep 28, 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 28, 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 enterprise software 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 enterprise software developers.
Partial evidence: Its own public description names part of custom enterprise software developers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name custom enterprise software 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 3,483 custom enterprise software developers based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 27,594 reachable decision-makers.

Free signup · no credit card

View the full list →

Custom enterprise software developers based in the United States at a glance

As of Sep 28, 2026

32.9%Verified-email coverage

24.1Average contacts per company

1-10Median size (employees)

3.5%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

1,806

11-50

1,115

51-200

430

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 3,483 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 enterprise software 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 enterprise software 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 enterprise software 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 enterprise software 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, 27,594 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 28, 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 enterprise software 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 enterprise software 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 enterprise software developers are there based in the United States?

RevenueBase identified 3,483 custom enterprise software 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?

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

Which city has the most custom enterprise software developers?

New York leads with 121 headquartered companies, followed by Houston (80) and Austin (60).

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 27,594 verified decision-maker contacts tracked across these 3,483 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 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 3,483 custom enterprise software developers based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Custom enterprise software developers 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.