Company lists · Data refreshed September 2026

Top 25 Custom software development startups based in San Diego, United States

Name: Custom software development startups based in San Diego, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 109 companies tracked

RevenueBase identified 109 company matches for custom software development startups associated with San Diego, United States as of September 2026 and tracks 2,261 professional contacts across them, including 586 with verified work emails. Across the United States, New York is the largest hub for this category (603 companies); San Diego has 109.

This list covers company matches for custom software development startups associated with San Diego, 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 29, 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 29, 2026 How this list was built

109Companies

2,261Contacts tracked

586Verified emails

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The 25 largest custom software development startups based in San Diego, United States

Ranked by team size

Top 25 of 109 company matches for custom software development startups based in San Diego, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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	Arkusnexus	Exact match	San Diego, CA, United StatesHQ recorded Sep 29, 2026	201-500	305 contacts →
	Exact match “At ArkusNexus, we're revolutionizing nearshore software development by integrating cutting-edge AI throughout our entire development lifecycle.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2	Integrant, INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 29, 2026	201-500	280 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3	Bitcot	Exact match	San Diego, CA, United StatesHQ recorded Sep 29, 2026	201-500	264 contacts →
	Exact match “Bitcot launched in 2014 as the vision of one man armed with a laptop.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4	Sysintelli Software And Services Private Limited	Exact match	San Diego, CA, United StatesHQ recorded Sep 29, 2026	51-200	81 contacts →
	Exact match “Sysintelli, founded in early 2005, as a software development and consulting firm, has now evolved to providing whole array of services and solutions in Application Development…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5	Primero Systems	Exact match	San Diego, CA, United StatesHQ recorded Sep 29, 2026	51-200	59 contacts →
	Exact match “Primero Systems is a custom software development company focused on building and supporting enterprise applications for complex business environments.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6	Creative Software International	Exact match	San Diego, CA, United StatesHQ recorded Sep 29, 2026	51-200	38 contacts →
	Exact match “Creative Software International provides software development and engineering support through a nearshore model built for teams that need to scale without disrupting delivery.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7	Jeannypr Softech Pvt. LTD	Exact match	San Diego, CA, United StatesHQ recorded Sep 29, 2026	11-50	36 contacts →
	Exact match “Jeannypr Softech is an IT product and services company and offers a full range of web, mobile & software development solutions.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8	Fuerza Studio	Exact match	San Diego, CA, United StatesHQ recorded Sep 29, 2026	11-50	35 contacts →
	Exact match “Fuerza Studio was founded in 2010.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9	Royanis	Exact match	San Diego, United StatesHQ recorded Sep 29, 2026	11-50	32 contacts →
	Exact match “Royanis is a company that specializes in solving software and data related challenges, turning ideas into web, cloud or mobile based digital software products that can scale to…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10	Tateeda Global	Exact match	San Diego, CA, United StatesHQ recorded Sep 29, 2026	51-200	31 contacts →
	Exact match “TATEEDA GLOBAL, a custom software development company and staff augmentation provider, boasts a talent pool of over 100 experienced engineers.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11	Shubh Solutions LLC	Exact match	San Diego, CA, United StatesHQ recorded Sep 29, 2026	51-200	26 contacts →
	Exact match “Shubh Solutions is an Information Technology(IT) company, providing enterprise solutions to bridge disparate work groups, IT systems, and business processes.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12	I2a Solutions INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 29, 2026	11-50	25 contacts →
	Exact match “At i2a Solutions, we transform our client’s ideas into innovative applications and solutions that deliver a high business impact.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13	Natural Networks, INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 29, 2026	11-50	24 contacts →
	Exact match “Natural Networks specializes in combining sound business strategies with cutting edge technologies to provide effective and comprehensive enterprise solutions for our customers.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14	Border UX	Exact match	San Diego, CA, United StatesHQ recorded Sep 29, 2026	11-50	22 contacts →
	Exact match “Border UX: UX strategy, design systems, and research engines for enterprise software.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15	Webcentriq	Exact match	San Diego, CA, United StatesHQ recorded Sep 29, 2026	51-200	21 contacts →
	Exact match “We specialize in digital innovation and transformation.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16	Swazei	Exact match	San Diego, CA, United StatesHQ recorded Sep 29, 2026	11-50	20 contacts →
	Exact match “Software Design and Development Platform with a passion to create intuitive products.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17	Fusion Media Solutions, INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 29, 2026	11-50	16 contacts →
	Exact match “We specialize in the creation of sophisticated and engaging web and mobile solutions for innovative clients around the world.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18	Search Rebel LLC	Exact match	San Diego, CA, United StatesHQ recorded Sep 29, 2026	11-50	16 contacts →
	Exact match “Embrace Disruption.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19	Digital Crafters	Exact match	San Diego, CA, United StatesHQ recorded Sep 29, 2026	51-200	15 contacts →
	Exact match “Digital Crafters is a web design and development company and we believe in providing high-quality value-added IT solutions to our clients.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20	Sunrise Apps	Exact match	San Diego, CA, United StatesHQ recorded Sep 29, 2026	51-200	15 contacts →
	Exact match “Sunrise Apps is a US-registered mobile & web development company.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21	Ifline Technologies	Exact match	San Diego, United StatesHQ recorded Sep 29, 2026	11-50	14 contacts →
	Exact match “IFLINE Software will assist your company in constituting new opportunities for enhancement by greatly diminishing the costs attributed in managing web and software applications.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22	SD Sharp	Exact match	San Diego, CA, United StatesHQ recorded Sep 29, 2026	11-50	13 contacts →
	Exact match “SD Sharp is a boutique Software Development agency with one of the best Dev Teams in California.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23	ESR Tech	Exact match	San Diego, CA, United StatesHQ recorded Sep 29, 2026	11-50	12 contacts →
	Exact match “We build software and applications, as well as provide consultation to small and medium-sized businesses on process automation, data science, data security and other aspects of…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24	Barefoot Solutions	Exact match	San Diego, CA, United StatesHQ recorded Sep 29, 2026	11-50	11 contacts →
	Exact match “Based in San Diego, Barefoot Solutions is an innovative custom web and mobile application development company.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25	Innoworx	Exact match	San Diego, CA, United StatesHQ recorded Sep 29, 2026	11-50	10 contacts →
	Exact match “InnoWorx is an IT solutions company delivering end-to-end technology services from strategy consulting to implementation and long-term support.” Recorded in the RevenueBase company graph · Sep 29, 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 “custom software development startups”. 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 109 custom software development startups based in San Diego, United States

See the full list, filter by size, metro and specialty, and access 586 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Custom software development startups based in San Diego, United States at a glance

As of Sep 29, 2026

25.9%Verified-email coverage

20.7Average contacts per company

11-50Median size (employees)

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for San Diego, so it is reported there. Company counts and contact totals on this page are exact for San Diego, over 109 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 Diego, United States whose business descriptions match “custom software development startups” 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 586 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 29, 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.

Custom software development startups 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 “custom software development startups”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many custom software development startups are there based in San Diego, United States?

RevenueBase identified 109 company matches for custom software development startups associated with San Diego, 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?

Arkusnexus 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 custom software development startups?

New York leads the United States with 603 company records, followed by Austin (351) and Houston (252). San Diego has 109.

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 586 professional contacts with verified work emails tracked across these 109 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 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 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.