Company lists · Data refreshed September 2026

Top 25 Volunteer software development companies based in the United States

Name: Volunteer software 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 29, 2026 2,652 companies tracked

RevenueBase identified 2,652 volunteer software development companies headquartered in the United States as of September 2026 and tracks 36,499 professional contacts across them, including 7,521 with verified work emails. New York is the largest hub.

This list covers volunteer software 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 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

2,652Companies

36,499Contacts tracked

7,521Verified emails

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The 25 largest volunteer software development companies based in the United States

Ranked by team size

Top 25 of 2,652 volunteer software development companies 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 volunteer software 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	Chetu, INC	Partial evidence	Sunrise, FL, United StatesHQ checked Sep 29, 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 29, 2026
2	In Time TEC	Indirect evidence	Meridian, ID, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,139 contacts →
	Indirect evidence “In Time Tec is a platform dedicated to Creating Abundance.” Source: RevenueBase Database · checked Sep 29, 2026
3	Folio3 Software	Strong evidence	San Mateo, CA, United StatesHQ checked Sep 29, 2026	501-1,000	846 contacts →
	Strong 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
4	BJIT	Strong evidence	Dhaka, CA, United StatesHQ checked Sep 29, 2026	501-1,000	711 contacts →
	Strong evidence “BJIT is a global leader in offshore software development and IT outsourcing services.” Source: RevenueBase Database · checked Sep 29, 2026
5	Softura	Partial evidence	Farmington Hills, MI, United StatesHQ checked Sep 29, 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 29, 2026
6	STPL	Strong evidence	San Mateo, CA, United StatesHQ checked Sep 29, 2026	51-200	405 contacts →
	Strong evidence “STPL incorporated in 2004, is an ISO 9001:2008 certified offshore software development company with a strong team of highly skilled IT experts, catering its global clientele with…” Source: RevenueBase Database · checked Sep 29, 2026
7	Plan A Technologies	Partial evidence	Las Vegas, NV, United StatesHQ checked Sep 29, 2026	201-500	383 contacts →
	Partial evidence “Plan A Technologies is an award-winning software engineering company.” Source: RevenueBase Database · checked Sep 29, 2026
8	Thinkbridge	Indirect evidence	Austin, TX, United StatesHQ checked Sep 29, 2026	201-500	360 contacts →
	Indirect evidence “The year was 2014.” Source: RevenueBase Database · checked Sep 29, 2026
9	Assuresoft	Partial evidence	Miami, FL, United StatesHQ checked Sep 29, 2026	201-500	346 contacts →
	Partial evidence “AssureSoft is a nearshore software engineering partner that helps organizations build, scale, and modernize their projects.” Source: RevenueBase Database · checked Sep 29, 2026
10	Foothill Technology Solutions, LLC	Strong evidence	Irvine, United StatesHQ checked Sep 29, 2026	201-500	318 contacts →
	Strong evidence “Foothill Technology Solutions is a Software development company.” Source: RevenueBase Database · checked Sep 29, 2026
11	Shinetech Software INC	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	501-1,000	303 contacts →
	Indirect evidence “Shinetech provides dedicated developers and teams to scale your engineering capacity-without losing domain knowledge or delivery predictability.” Source: RevenueBase Database · checked Sep 29, 2026
12	Hack4impact	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 29, 2026	n/a	280 contacts →
	Partial evidence “Hack4Impact's mission is to foster the wider adoption of software as a tool for social impact.” Source: RevenueBase Database · checked Sep 29, 2026
13	tarmac.io	Partial evidence	Minneapolis, MN, United StatesHQ checked Sep 29, 2026	201-500	258 contacts →
	Partial evidence “Tarmac helps businesses design, build, scale, and support exceptional software.” Source: RevenueBase Database · checked Sep 29, 2026
14	Avantica	Indirect evidence	Scottsdale, AZ, United StatesHQ checked Sep 29, 2026	5,001-10,000	242 contacts →
	Indirect evidence “Encora es líder en el gran mercado de desarrollo de productos subcontratados de rápido crecimiento.” Source: RevenueBase Database · checked Sep 29, 2026
15	Kanda Software	Strong evidence	Newton, MA, United StatesHQ checked Sep 29, 2026	201-500	224 contacts →
	Strong evidence “Kanda is a custom software product development company with 30+ years of impeccable reputation for quality, speed, and client IP protection.” Source: RevenueBase Database · checked Sep 29, 2026
16	Develux	Strong evidence	Kissimmee, United StatesHQ checked Sep 29, 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 29, 2026
17	Glorium Technologies	Strong evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	201-500	217 contacts →
	Strong evidence “Glorium Technologies is a top-shelf bespoke software development firm, boasting 100+ deployed products.” Source: RevenueBase Database · checked Sep 29, 2026
18	Intertech, INC	Strong evidence	Eagan, MN, United StatesHQ checked Sep 29, 2026	51-200	210 contacts →
	Strong evidence “Intertech is a Software Development Consulting Firm that provides full-time experts and single and multiple turnkey software development teams, available on your schedule and…” Source: RevenueBase Database · checked Sep 29, 2026
19	Ikonic	Partial evidence	Miami, FL, United StatesHQ checked Sep 29, 2026	51-200	193 contacts →
	Partial evidence “A High-End Outsourcing Team, Providing Elite Software Services A team determined to serve you regardless of your location and bringing the desired results.” Source: RevenueBase Database · checked Sep 29, 2026
20	Southworks	Strong evidence	Bellevue, WA, United StatesHQ checked Sep 29, 2026	201-500	188 contacts →
	Strong evidence “SOUTHWORKS Development on Demand model turns up the heat on software engineering projects, taking clients from stuck to scaled one week at a time.” Source: RevenueBase Database · checked Sep 29, 2026
21	Deltacubes	Indirect evidence	Pennsville Township, NJ, United StatesHQ checked Sep 29, 2026	51-200	182 contacts →
	Indirect evidence “Empowering Global Businesses with Innovative Solutions At Deltacubes Technologies, we're not just a technology company; we are your strategic partner in progress.” Source: RevenueBase Database · checked Sep 29, 2026
22	Syberry	Partial evidence	Austin, TX, United StatesHQ checked Sep 29, 2026	201-500	181 contacts →
	Partial evidence “Syberry Corporation is a global custom software engineering company.” Source: RevenueBase Database · checked Sep 29, 2026
23	Siliconmint	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 29, 2026	51-200	179 contacts →
	Partial evidence “SiliconMint provides dedicated software teams that architect, build and support mission-critical systems.” Source: RevenueBase Database · checked Sep 29, 2026
24	Itexus	Strong evidence	Dover, DE, United StatesHQ checked Sep 29, 2026	51-200	169 contacts →
	Strong evidence “Itexus is a custom software development company with 100+ experienced developers.” Source: RevenueBase Database · checked Sep 29, 2026
25	Polus Solutions	Strong evidence	Burlington, MA, United StatesHQ checked Sep 29, 2026	51-200	164 contacts →
	Strong evidence “Established in 2009, Polus is a global software solutions and product development company dedicated towards providing expert software development services and solutions for small…” 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: volunteer software 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 volunteer software development companies.
Partial evidence: Its own public description names part of volunteer software development companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name volunteer software 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 2,652 volunteer software development companies based in the United States

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Volunteer software development companies based in the United States at a glance

As of Sep 29, 2026

20.6%Verified-email coverage

13.8Average contacts per company

1-10Median size (employees)

5.6%Largest-city concentration · New York

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

1,354

11-50

857

51-200

352

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 2,652 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 volunteer software 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 “volunteer software 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 volunteer software 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 volunteer software 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, 7,521 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.

Volunteer software development companies 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 volunteer software 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 volunteer software development companies are there based in the United States?

RevenueBase identified 2,652 volunteer software 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?

Chetu, INC, headquartered in Sunrise, tops this list with the largest team on record.

Which city has the most volunteer software development companies?

New York leads with 149 headquartered companies, followed by San Francisco (75) and Austin (72).

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 7,521 verified decision-maker contacts tracked across these 2,652 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.