Company lists · Data refreshed September 2026

Top 25 Custom software development firms worldwide

Name: Custom software development firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 1, 2026 36,109 companies tracked

RevenueBase identified 36,109 custom software development firms worldwide as of September 2026 and tracks 334,610 professional contacts across them, including 87,372 with verified work emails and 21,958 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers custom software development firms worldwide, 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 1, 2026. Country and city lists for custom software development firms follow the table.

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 RevenueBase Smart Search rating on every row Refreshed Sep 1, 2026 86% judged on-target in blind review

36,109Companies

334,610Contacts tracked

87,372Verified emails

21,958Mobile numbers

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The 25 largest custom software development firms worldwide

Ranked by team size

Top 25 of 36,109 custom software development firms worldwide, ranked by team size, largest first. Data refreshed Sep 1, 2026. RevenueBase Smart Search rates how each company's information relates to custom software development 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	Epicor	Indirect evidence	Melbourne, AU	1,001-5,000	5,868 contacts →
	Indirect evidence “We’re here for the hard-working businesses that keep the world turning.” Source: RevenueBase Database · checked Sep 1, 2026
2	Dotsquares	Indirect evidence	Bethesda, MD, US	501-1,000	1,566 contacts →
	Indirect evidence “We leverage the latest web and mobile technologies to build, grow and support your business.” Source: RevenueBase Database · checked Sep 1, 2026
3	Evosoft	Strong evidence	Miskolc, HU	1,001-5,000	1,533 contacts →
	Strong evidence “The evosoft Group is an international system house that has developed custom-made software solutions since 1995.” Source: RevenueBase Database · checked Sep 1, 2026
4	Pragma	Strong evidence	Miami, FL, US	1,001-5,000	1,423 contacts →
	Strong evidence “Pragma is a Custom Software Development and Digital Transformation company founded 30 years ago to improve people's lives by transforming businesses.” Source: RevenueBase Database · checked Sep 1, 2026
5	Trigent Software INC	Strong evidence	Southborough, MA, US	1,001-5,000	1,368 contacts →
	Strong evidence “Trigent is a global leader in software solutions, headquartered in Southborough, MA, with development centers in Boston, Bangalore.” Source: RevenueBase Database · checked Sep 1, 2026
6	HIQ	Strong evidence	Orebro, SE	1,001-5,000	1,250 contacts →
	Strong evidence “HiQ is a tech consulting company focused on custom software development, positioned at the intersection of digital transformation and specialized engineering.” Source: RevenueBase Database · checked Sep 1, 2026
7	BBD	Partial evidence	London, GB	1,001-5,000	1,220 contacts →
	Partial evidence “Welcome to BBD – where experience, innovation and software engineering excellence come together.” Source: RevenueBase Database · checked Sep 1, 2026
8	Brain Station 23	Indirect evidence	Bad Zwischenahn, DE	501-1,000	1,045 contacts →
	Indirect evidence “Brain Station 23 is at the forefront of global digital transformation, delivering state-of-the-art technology solutions designed to propel businesses into the future.” Source: RevenueBase Database · checked Sep 1, 2026
9	dev.pro	Partial evidence	Plovdiv, BG	501-1,000	1,007 contacts →
	Partial evidence “Dev.Pro helps innovative technology companies scale their business by leveraging our software engineering expertise to support them every step of the way.” Source: RevenueBase Database · checked Sep 1, 2026
10	SFEIR	Indirect evidence	Bruxelles, BE	501-1,000	916 contacts →
	Indirect evidence “SFEIR est une Société d’expertise spécialisée dans le développement d’applications sous toutes leurs formes ( web, mobile, IOT, cloud, data, etc.).” Source: RevenueBase Database · checked Sep 1, 2026
11	Sysmap Solutions	Strong evidence	Sao Paulo, BR	1,001-5,000	894 contacts →
	Strong evidence “SysMap Solutions is a services company devoted to offering technological development to its customers since 1997.” Source: RevenueBase Database · checked Sep 1, 2026
12	Mirante Tecnologia	Indirect evidence	Brasilia, BR	1,001-5,000	732 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 1, 2026
13	Codeclouds	Indirect evidence	Wellington, NZ	501-1,000	731 contacts →
	Indirect evidence “CodeClouds specializes in delivering scalable, robust solutions for modern businesses of all sizes including enterprise clients.” Source: RevenueBase Database · checked Sep 1, 2026
14	Unthinkable Solutions	Partial evidence	Grandville, MI, US	501-1,000	711 contacts →
	Partial evidence “Unthinkable combines deep domain expertise with architectural excellence and AI-assisted development to build platforms that don't just ship fast; they scale effortlessly and…” Source: RevenueBase Database · checked Sep 1, 2026
15	Asseco Business Solutions S.A	Partial evidence	Lublin, PL	501-1,000	671 contacts →
	Partial evidence “Asseco Business Solutions is a part of the international Asseco Group, a European market leader in proprietary software, operating in over 50 countries worldwide.” Source: RevenueBase Database · checked Sep 1, 2026
16	ABRA	Indirect evidence	IL	1,001-5,000	581 contacts →
	Indirect evidence “abra is composed of over experts delivering cutting-edge tech solutions across BI & AI, ERP, CRM, Cyber, Cloud & Infrastructure, R&D, Web & Mobile, e-Commerce, and more.” Source: RevenueBase Database · checked Sep 1, 2026
17	SAM Solutions	Strong evidence	Gilching, DE	501-1,000	559 contacts →
	Strong evidence “Welcome to SaM Solutions – a software development company that drives digital transformation with the help of its international team of seasoned engineers and best-in-class…” Source: RevenueBase Database · checked Sep 1, 2026
18	Exsitec	Partial evidence	Borlange, SE	501-1,000	550 contacts →
	Partial evidence “Exsitec are experts in digital solutions that make a difference in the customer's business.” Source: RevenueBase Database · checked Sep 1, 2026
19	Gemini Consulting & Services	Indirect evidence	Saint Louis, MO, US	501-1,000	548 contacts →
	Indirect evidence “Gemini Consulting & Services (GCS) is a leading provider of technology solutions.” Source: RevenueBase Database · checked Sep 1, 2026
20	Softteco	Strong evidence	Loughborough, GB	501-1,000	539 contacts →
	Strong evidence “SoftTeco is a software development company that was founded in 2008 providing custom software development services.” Source: RevenueBase Database · checked Sep 1, 2026
21	Invozone	Strong evidence	Toronto, ON, CA	201-500	488 contacts →
	Strong evidence “InvoZone is a leading software development company that excels in industry-focused software development solutions and consulting services across multiple industries.” Source: RevenueBase Database · checked Sep 1, 2026
22	Codecentric AG	Partial evidence	Berlin, DE	501-1,000	483 contacts →
	Partial evidence “Seit zwei Dekaden entwickelt die codecentric AG moderne, individuelle Software.” Source: RevenueBase Database · checked Sep 1, 2026
23	JIT Team	Strong evidence	Warszawa, PL	501-1,000	483 contacts →
	Strong evidence “We provide complete software development teams, who will take complex care of your software.” Source: RevenueBase Database · checked Sep 1, 2026
24	Framework Digital	Strong evidence	Belo Horizonte, BR	501-1,000	467 contacts →
	Strong evidence “We are a software development group with focus on web and mobile development projects.” Source: RevenueBase Database · checked Sep 1, 2026
25	Editor	Partial evidence	Solkan Nova Gorica, SI	n/a	466 contacts →
	Partial evidence “Editor is a cutting edge web design and application development agency.” Source: RevenueBase Database · checked Sep 1, 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 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 firms.
Partial evidence: Its own public description names part of custom software development 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 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 36,109 custom software development firms worldwide

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Custom software development firms worldwide at a glance

As of Sep 1, 2026

26.1%Verified-email coverage

6.6%Mobile-number coverage

9.3Average contacts per company

1-10Median size (employees)

3.2%Largest-city concentration · London

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

22,032

11-50

10,720

51-200

2,554

201-500

410

501-1,000

1,001-5,000

5,001-10,000

10001+

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 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.
Coverage: 46 countries, largest first: the United States, the United Kingdom, Brazil, Germany, Canada, France, Italy, Australia, the Netherlands, Spain and 36 more. Country and city lists for custom software development firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “custom software development 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 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 firms, and records with no verified work email.
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, 87,372 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 1, 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 firms by location

146 lists · largest first

Every Custom software development firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 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 firms are there worldwide?

RevenueBase identified 36,109 custom software development firms worldwide 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?

Epicor, headquartered in Melbourne, tops this list with the largest team on record.

Which country has the most custom software development firms?

The United States leads with 9,070 companies, followed by the United Kingdom (3,218) and Brazil (2,983). Every custom software development firms list by country and city is linked on this page.

Which city has the most custom software development firms?

London leads with 1156 headquartered companies, followed by Sao Paulo (526) and New York (404).

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 87,372 verified decision-maker contacts tracked across these 36,109 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 1, 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.