Company lists · Data refreshed September 2026

Top 25 Custom software development consulting firms based in the United States

Name: Custom software development consulting firms 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 19,358 companies tracked

RevenueBase identified 19,358 custom software development consulting firms headquartered in the United States as of September 2026 and tracks 388,559 professional contacts across them, including 98,017 with verified work emails and 53,360 with mobile numbers. New York is the largest hub.

This list covers custom software development consulting firms 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

19,358Companies

388,559Contacts tracked

98,017Verified emails

53,360Mobile numbers

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The 25 largest custom software development consulting firms based in the United States

Ranked by team size

Top 25 of 19,358 custom software development consulting firms 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 development consulting firms: 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	Globallogic	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 24, 2026	10001+	30,977 contacts →
	Indirect evidence “GlobalLogic, a Hitachi Group company, is a trusted partner in design, data, and digital engineering for the world’s largest and most innovative companies.” Source: RevenueBase Database · checked Sep 24, 2026
2	CDW	Indirect evidence	Vernon Hills, IL, United StatesHQ checked Sep 24, 2026	10001+	13,155 contacts →
	Indirect evidence “At CDW, we know how to make technology work so people can do great things.” Source: RevenueBase Database · checked Sep 24, 2026
3	R Systems	Partial evidence	El Dorado Hills, CA, United StatesHQ checked Sep 24, 2026	5,001-10,000	7,360 contacts →
	Partial evidence “RSI is a trusted software engineering and digital transformation services partner to global enterprises navigating technological change.” Source: RevenueBase Database · checked Sep 24, 2026
4	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
5	Dataart	Partial evidence	New York, NY, United StatesHQ checked Sep 24, 2026	5,001-10,000	5,249 contacts →
	Partial evidence “DataArt is a global software engineering firm that delivers breakthrough data, analytics, and AI platforms for the world’s most demanding organizations.” Source: RevenueBase Database · checked Sep 24, 2026
6	Presidio	Indirect evidence	New York, NY, United StatesHQ checked Sep 24, 2026	1,001-5,000	3,798 contacts →
	Indirect evidence “At Presidio, speed and quality meet technology and innovation.” Source: RevenueBase Database · checked Sep 24, 2026
7	Iris Software INC	Partial evidence	Edison, NJ, United StatesHQ checked Sep 24, 2026	1,001-5,000	3,421 contacts →
	Partial evidence “Iris Software has been a trusted software engineering partner to several Fortune 500 companies for over three decades.” Source: RevenueBase Database · checked Sep 24, 2026
8	Chetu, INC	Partial evidence	Sunrise, FL, United StatesHQ checked Sep 24, 2026	1,001-5,000	2,943 contacts →
	Partial evidence “Chetu is your seamless backend technology partner, helping startups, SMBs, and Fortune companies accelerate development of desktop, mobile, and web apps with on-demand developers…” Source: RevenueBase Database · checked Sep 24, 2026
9	People Tech Group INC	Indirect evidence	Redmond, WA, United StatesHQ checked Sep 24, 2026	1,001-5,000	2,434 contacts →
	Indirect evidence “People Tech Group is a leading Enterprise Solutions, Digital Transformation, Data Intelligence, and Modern Operation services provider.” Source: RevenueBase Database · checked Sep 24, 2026
10	CTG	Indirect evidence	Amherst, NY, United StatesHQ checked Sep 24, 2026	5,001-10,000	2,264 contacts →
	Indirect evidence “CTG, a Cegeka company, is at the forefront of digital transformation, offering innovative IT solutions and services that accelerate your strategy and project momentum.” Source: RevenueBase Database · checked Sep 24, 2026
11	Techwave	Indirect evidence	Houston, TX, United StatesHQ checked Sep 24, 2026	1,001-5,000	2,140 contacts →
	Indirect evidence “Techwave is a leading global IT and engineering services and solutions company revolutionizing digital transformation.” Source: RevenueBase Database · checked Sep 24, 2026
12	Nous Infosystems	Indirect evidence	Edison, NJ, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,926 contacts →
	Indirect evidence “Nous Infosystems is now.” Source: RevenueBase Database · checked Sep 24, 2026
13	Exadel	Strong evidence	Walnut Creek, CA, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,874 contacts →
	Strong 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
14	Tech Mahindra	Indirect evidence	Streetman, TX, United StatesHQ checked Sep 24, 2026	n/a	1,860 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 24, 2026
15	Infovision INC	Indirect evidence	Richardson, TX, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,728 contacts →
	Indirect evidence “Infovision, founded in 1995, is a leading global IT services company offering enterprise digital transformation and modernization solutions across business verticals.” Source: RevenueBase Database · checked Sep 24, 2026
16	Itransition Group	Strong evidence	Decatur, GA, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,664 contacts →
	Strong evidence “Founded in 1998, Itransition is a global software engineering and IT consulting company with engineers supporting clients across 40 countries.” Source: RevenueBase Database · checked Sep 24, 2026
17	Quadrant Technologies	Indirect evidence	Redmond, WA, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,664 contacts →
	Indirect evidence “Quadrant Technologies: Your Go-to IT Services Partner for a Digital Future For over a decade, Quadrant Technologies has established itself as a trailblazer in the IT services…” Source: RevenueBase Database · checked Sep 24, 2026
18	10pearls	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,636 contacts →
	Indirect evidence “10Pearls is an AI-native, award-winning global digital engineering partner helping businesses innovate, modernize & accelerate digital transformation As an end-to-end digital…” Source: RevenueBase Database · checked Sep 24, 2026
19	Leverx	Indirect evidence	Miami, FL, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,632 contacts →
	Indirect 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 24, 2026
20	Improving	Indirect evidence	Plano, TX, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,578 contacts →
	Indirect evidence “Improving is a leading IT professional services firm committed to helping companies achieve lasting success through modern technology.” Source: RevenueBase Database · checked Sep 24, 2026
21	3pillar	Indirect evidence	Fairfax, VA, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,575 contacts →
	Indirect evidence “At 3Pillar, we believe something truly incredible happens at the intersection of product engineering and cognitive computing.” Source: RevenueBase Database · checked Sep 24, 2026
22	Hughes Systique Corporation HSC	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,524 contacts →
	Indirect evidence “Hughes Systique Corporation (HSC) is a global digital engineering and transformation partner enabling enterprises to modernize, innovate, and grow through its AI-First approach.” Source: RevenueBase Database · checked Sep 24, 2026
23	Searce INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,511 contacts →
	Indirect evidence “Searce is an AI-native, engineering-led modern tech consultancy that empowers clients to futurify by delivering real business outcomes.” Source: RevenueBase Database · checked Sep 24, 2026
24	Prolifics	Indirect evidence	Orlando, FL, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,491 contacts →
	Indirect evidence “Prolifics is a global digital engineering and consultancy firm that empowers businesses with end-to-end technology solutions across data, AI, cloud, and digital transformation.” Source: RevenueBase Database · checked Sep 24, 2026
25	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

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 development consulting firms. 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 development consulting firms.
Partial evidence: Its own public description names part of custom software development consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name custom software development consulting firms. 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 19,358 custom software development consulting firms based in the United States

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Custom software development consulting firms based in the United States at a glance

As of Sep 24, 2026

25.2%Verified-email coverage

13.7%Mobile-number coverage

20.1Average contacts per company

11-50Median size (employees)

6.1%Largest-city concentration · New York

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

13,587

11-50

9,079

51-200

3,838

201-500

868

501-1,000

289

1,001-5,000

148

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

72,6360–30

22,47431–60

1,47261–90

6490–180

1,371180+

Company record updated

Median 87.0d

00–30

57,29231–60

171,77761–90

138,08390–180

21,407180+

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 development consulting firms, 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 development consulting firms”. 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 development consulting firms), 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 development consulting firms, 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, 98,017 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 development consulting firms 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 development consulting firms, 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 development consulting firms are there based in the United States?

RevenueBase identified 19,358 custom software development consulting firms 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?

Globallogic, headquartered in Santa Clara, tops this list with the largest team on record.

Which city has the most custom software development consulting firms?

New York leads with 1174 headquartered companies, followed by Austin (678) and Houston (589).

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 98,017 verified decision-maker contacts tracked across these 19,358 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.

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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.