Company lists · Data refreshed September 2026

Top 25 Outsource software development companies based in San Francisco, United States

Name: Outsource software development companies based in San Francisco, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 86 companies tracked

RevenueBase identified 86 company matches for outsource software development companies associated with San Francisco, United States as of September 2026 and tracks 5,081 professional contacts across them, including 1,440 with verified work emails. Across the United States, New York is the largest hub for this category (242 companies); San Francisco has 86.

This list covers company matches for outsource software development companies associated with San Francisco, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 21, 2026 How this list was built

86Companies

5,081Contacts tracked

1,440Verified emails

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The 25 largest outsource software development companies based in San Francisco, United States

Ranked by team size

Top 25 of 86 company matches for outsource software development companies based in San Francisco, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Bairesdev	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	3,186 contacts →
	Exact match “BairesDev is your expert partner that works alongside clients to build high-quality software solutions with speed and precision.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2	Fluxon	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	201-500	200 contacts →
	Exact match “Fluxon is a San Francisco-based software development team trusted by Google, Anthropic, Stripe, and top startups with the technology work that matters most.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3	MINDK	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	51-200	124 contacts →
	Exact match “MindK is a software development and IT consulting company that helps businesses build software products, automate business processes, modernize technology and infrastructure.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	Ensolvers	Exact match	San Francisco, United StatesHQ recorded Sep 21, 2026	51-200	121 contacts →
	Exact match “Ensolvers specializes in software development, architecture, product development, outsourcing, testing, and building dedicated teams for end-to-end software solutions.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5	Mechlin Technologies	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	51-200	103 contacts →
	Exact match “Mechlin Technologies is a San Francisco, California (USA) based software development and technology consulting company, powered by a trusted offshore engineering team, helping…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6	Treinetic	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	51-200	79 contacts →
	Exact match “Treinetic™ is a leading software product engineering and technology consulting company, recognized for its innovative and award-winning solutions.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7	Smart IT	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	51-200	68 contacts →
	Exact match “Smart IT is a custom software development and web development company headquartered in San Francisco.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	Willware Technologies	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	51-200	66 contacts →
	Exact match “Willware Technologies, an ISO 9001 and ISO 27001 certified company headquartered in Koramangala, Bangalore, with a presence in California, USA, is a dynamic software development…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	Gbsfo Custom Software Solutions Provider	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	51-200	50 contacts →
	Exact match “GBSFO is a creative software development solutions company with a strong attitude.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10	Scalac	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	51-200	49 contacts →
	Exact match “For over 10 years, Scalac has been delivering high-quality software, successfully aiding FinTechs, HealthTechs, EdTechs, AdTechs and startups in their efforts to scale.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	Syndicode	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	51-200	40 contacts →
	Exact match “Syndicode is your value-driven software development partner with a globally distributed team of 70+ engineers, designers, architects and IT managers.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	Alto Acq. By Revelo	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	51-200	39 contacts →
	Exact match “Alto is a San Francisco-based technology company specializing in assembling and managing global software engineering teams across 30+ countries.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Goteso	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	11-50	33 contacts →
	Exact match “Goteso is a product and service based software development firm.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	Quimbik, INC	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	11-50	23 contacts →
	Exact match “Quimbik is a software engineering company focused on web applications (solutions).” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	Code Power	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	201-500	22 contacts →
	Exact match “We are the fastest-growing Nearshore Software Outsourcing company in the Americas.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	Appstem	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	51-200	20 contacts →
	Exact match “Appstem designs and develops custom software to help our clients solve complex business problems.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	Cidersoft	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	51-200	16 contacts →
	Exact match “Cidersoft is a San Francisco based software development company that offers full-service software design and development.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	LAB Zero Innovations INC	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	11-50	15 contacts →
	Exact match “Lab Zero designs and develops custom software and products that move your business forward.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	Allstarsit	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	501-1,000	14 contacts →
	Exact match “ALLSTARSIT is an international outstaffing service provider that helps businesses recruit, pay, insure, and support top global talent with payroll, benefits, and more.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	Novalab Tech	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	51-200	12 contacts →
	Exact match “NovaLab Tech is a software development company with over 10 years of proven industry experience.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	Protonomics, LLC	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	11-50	3 contacts →
	Exact match “Protonomics has a worldwide network of software architects, developers and analysts offering on demand services for IT and Business Strategy.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22	Prolev Technologies, LLC	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	51-200	2 contacts →
	Exact match “Prolev Technologies LLC is a Bay Area-based software development outsourcing company with a focus on building and maintaining strong software engineering teams for unique needs of…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	Glatco INC	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	51-200	1 contacts →
	Exact match “We are a leading provider of offshore software development solutions with US-based technical and program management.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24	Form Soft INC	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	51-200	1 contacts →
	Exact match “FormSoft provides software development services for high growth companies.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	Conexa	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	11-50	1 contacts →
	Exact match “Somos un Software Factory fundado en Octubre de 2016 que cree en brindar un servicio por encima de las expectativas.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “outsource software development companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 86 outsource software development companies based in San Francisco, United States

See the full list, filter by size, metro and specialty, and access 1,440 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Outsource software development companies based in San Francisco, United States at a glance

As of Sep 21, 2026

28.3%Verified-email coverage

59.1Average contacts per company

11-50Median size (employees)

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 86 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with San Francisco, United States whose business descriptions match “outsource software development companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,440 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Outsource software development companies by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “outsource software development companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many outsource software development companies are there based in San Francisco, United States?

RevenueBase identified 86 company matches for outsource software development companies associated with San Francisco, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Bairesdev tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most outsource software development companies?

New York leads the United States with 242 company records, followed by Austin (149) and Houston (100). San Francisco has 86.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,440 professional contacts with verified work emails tracked across these 86 companies; direct dials are available where recorded.

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 SmartSearch, 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.