Company lists · Data refreshed September 2026

Top 25 Custom software development startups based in Los Angeles, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 196 companies tracked

RevenueBase identified 196 custom software development startups headquartered in Los Angeles, United States as of September 2026 and tracks 3,584 professional contacts across them, including 459 with verified work emails. Across the United States, New York is the largest hub for this category (566 companies); Los Angeles has 196.

This list covers custom software development startups headquartered in Los Angeles, 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

196Companies

3,584Contacts tracked

459Verified emails

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The 25 largest custom software development startups based in Los Angeles, United States

Ranked by team size

Top 25 of 196 custom software development startups based in Los Angeles, United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to custom software development startups: 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	Mobile Programming	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 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 29, 2026
2	ACE Infoway Pvt. LTD	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	201-500	385 contacts →
	Partial evidence “Ace Infoway is a passionate ‘go-to’ Technology Partner for web/software agencies and businesses in various industry verticals, across the globe as an extended partner and offshore…” Source: RevenueBase Database · checked Sep 29, 2026
3	Rigel Networks	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	201-500	237 contacts →
	Indirect evidence “We empower businesses through a wide array of technology solutions, specialized services, and industry-specific offerings.” Source: RevenueBase Database · checked Sep 29, 2026
4	Qwerty Experts	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	51-200	122 contacts →
	Indirect evidence “Designed in USA and Developed in Pakistan.” Source: RevenueBase Database · checked Sep 29, 2026
5	Sibers	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	51-200	112 contacts →
	Strong evidence “Sibers is a software development partner helping founders and product teams turn ideas into reliable, working software.” Source: RevenueBase Database · checked Sep 29, 2026
6	Uptech	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	51-200	111 contacts →
	Strong evidence “Uptech is an international software development company that helps build profitable products with product market fit for companies on Fortune 500, Inc.” Source: RevenueBase Database · checked Sep 29, 2026
7	It-Dimension	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	51-200	60 contacts →
	Strong evidence “IT-Dimension is a dynamic, collaborative team of experts, specializing in designing and developing custom software solutions that empower businesses worldwide.” Source: RevenueBase Database · checked Sep 29, 2026
8	Gizmeon	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	53 contacts →
	Indirect evidence “Connect with us at info@gizmeon.com Gizmeon Technologies is a new generation technology services company initiated by a team of experienced IT professionals in Bangalore, India.” Source: RevenueBase Database · checked Sep 29, 2026
9	Addendum	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	51-200	51 contacts →
	Strong evidence “ADDENDUM is an international provider of IT services for software development, IT outsourcing, and consulting.” Source: RevenueBase Database · checked Sep 29, 2026
10	Infowebusa Technologies	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	51-200	50 contacts →
	Partial evidence “Our company’s motto is based on a simple principle of providing our clients with superior Customer satisfaction through our top-notch services and quality.” Source: RevenueBase Database · checked Sep 29, 2026
11	VYNYL	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	36 contacts →
	Indirect evidence “Digital Transformation.” Source: RevenueBase Database · checked Sep 29, 2026
12	Webmedia Experts LLC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	36 contacts →
	Indirect evidence “Celebrating 13 Years of Productivity & Automation Excellence!” Source: RevenueBase Database · checked Sep 29, 2026
13	Appmakers USA	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	1-10	29 contacts →
	Indirect evidence “Our award-winning firm specializes in delivering beautiful apps on time and on budget.” Source: RevenueBase Database · checked Sep 29, 2026
14	Linkedge Technologies	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	28 contacts →
	Indirect evidence “Since 1998, LinkEdge Technologies has operated as an IT solutions provider for its clients.” Source: RevenueBase Database · checked Sep 29, 2026
15	Refact	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	19 contacts →
	Strong evidence “Refact is a software product development studio for non-technical founders and domain experts.” Source: RevenueBase Database · checked Sep 29, 2026
16	Sunnybyte	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	17 contacts →
	Strong evidence “SunnyByte is a web and mobile app development and marketing tech firm specializing in software development services for clients and partners who need cost-effective, dependable…” Source: RevenueBase Database · checked Sep 29, 2026
17	Clariont INC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	16 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026
18	Coreware Group	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	15 contacts →
	Partial evidence “Think of us as your technical co-founders, an extension of your team: highly-skilled engineers who will design, develop, and maintain the software systems necessary to power your…” Source: RevenueBase Database · checked Sep 29, 2026
19	Swareco	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	14 contacts →
	Partial evidence “At SWARECO, we build software and run the engineering behind it.” Source: RevenueBase Database · checked Sep 29, 2026
20	1dev.ai	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	14 contacts →
	Partial evidence “Cenedex works passionately to integrate information, design, and technology to help our clients transform their visions to tech reality with cloud, mobile, and desktop software…” Source: RevenueBase Database · checked Sep 29, 2026
21	Digital Squared	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	13 contacts →
	Partial evidence “Digital Squared helps clients achieve greatest results and offers design, strategy, and application development to the companies going through a Digital Transformation process.” Source: RevenueBase Database · checked Sep 29, 2026
22	AIM Tech AI	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	51-200	12 contacts →
	Strong evidence “AIM Tech AI specializes in advanced software development, offering tailored solutions to enhance existing applications or construct new, custom applications from the ground up.” Source: RevenueBase Database · checked Sep 29, 2026
23	AVA Tech LLC	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	11 contacts →
	Strong evidence “AVA Technology LLC is a software development company which develops agile solutions for public and private SMEs.” Source: RevenueBase Database · checked Sep 29, 2026
24	Practical Logix	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	10 contacts →
	Indirect evidence “We strategize, build and maintain scalable, cost-effective mobile solutions for enterprises in different verticals and sizes, recent ones being TMZ and Directv/AT & T with much…” Source: RevenueBase Database · checked Sep 29, 2026
25	Materialize Labs	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	9 contacts →
	Strong evidence “Materialize Labs is a pioneering software development studio specializing in creating bespoke web, mobile, and AI-driven solutions.” 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: custom software development startups. 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 startups.
Partial evidence: Its own public description names part of custom software development startups, 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 startups. 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 196 custom software development startups based in Los Angeles, United States

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Custom software development startups based in Los Angeles, United States at a glance

As of Sep 29, 2026

12.8%Verified-email coverage

18.3Average contacts per company

11-50Median size (employees)

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

5,001-10,000

Email recency for this list is measured across the whole United States list rather than for Los Angeles, so it is reported there. Company counts and contact totals on this page are exact for Los Angeles, over 196 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 software development startups, 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 Los Angeles, United States whose own description of what they do matches “custom software development startups”. 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 startups), 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 startups, and records with no verified work email. Companies headquartered outside Los Angeles 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, 459 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.

Custom software development startups by metro in the United States

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 startups, 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 startups are there based in Los Angeles, United States?

RevenueBase identified 196 custom software development startups headquartered in Los Angeles, 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?

Mobile Programming, headquartered in Los Angeles, tops this list with the largest team on record.

Which city in the United States has the most custom software development startups?

New York leads the United States with 566 headquartered companies, followed by Austin (351) and Houston (252). Los Angeles has 196.

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 459 verified decision-maker contacts tracked across these 196 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.