Company lists · Data refreshed September 2026

Top 25 Customized software development companies based in Warsaw, Poland

Name: Customized software development companies based in Warsaw, Poland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 222 companies tracked

RevenueBase identified 222 customized software development companies headquartered in Warsaw, Poland as of September 2026 and tracks 10,159 professional contacts across them, including 3,376 with verified work emails. Warsaw is the largest hub.

This list covers customized software development companies headquartered in Warsaw, Poland, 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 24, 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 24, 2026 86% judged on-target in blind review

222Companies

10,159Contacts tracked

3,376Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest customized software development companies based in Warsaw, Poland

Ranked by team size

Top 25 of 222 customized software development companies based in Warsaw, Poland, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to customized 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	Andersen LAB	Strong evidence	Warsaw, PolandHQ checked Sep 24, 2026	1,001-5,000	3,628 contacts →
	Strong evidence “Andersen – your global software development partner Andersen is a global software development company with over 18 years of experience supporting businesses worldwide in their…” Source: RevenueBase Database · checked Sep 24, 2026
2	Elinext	Strong evidence	Warsaw, PolandHQ checked Sep 24, 2026	501-1,000	646 contacts →
	Strong evidence “We are a global AI-powered software development company with 28+ years of engineering experience, delivering human-verified AI solutions and complex software systems for…” Source: RevenueBase Database · checked Sep 24, 2026
3	Britenet	Strong evidence	Warsaw, PolandHQ checked Sep 24, 2026	1,001-5,000	639 contacts →
	Strong evidence “With 18+ years of elite software development expertise, we've established ourselves as a leading European IT consultancy specializing in analytics-powered digital transformation.” Source: RevenueBase Database · checked Sep 24, 2026
4	Softteco	Strong evidence	Warsaw, PolandHQ checked Sep 24, 2026	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 24, 2026
5	SAWIT	Partial evidence	Warsaw, PolandHQ checked Sep 24, 2026	n/a	284 contacts →
	Partial evidence “SAWIT - sawit.pl - was founded in 2014 in order to supply B2B services in programming and web development.” Source: RevenueBase Database · checked Sep 24, 2026
6	The Software House	Strong evidence	Warsaw, PolandHQ checked Sep 24, 2026	201-500	279 contacts →
	Strong evidence “12+ years of custom software development centered on client satisfaction.” Source: RevenueBase Database · checked Sep 24, 2026
7	Nexio Management	Strong evidence	Warsaw, PolandHQ checked Sep 24, 2026	501-1,000	241 contacts →
	Strong evidence “Nexio Management is a software development and consulting company.” Source: RevenueBase Database · checked Sep 24, 2026
8	Dahliamatic Sp. Z O.O	Indirect evidence	Warsaw, PolandHQ checked Sep 24, 2026	201-500	170 contacts →
	Indirect evidence “Działamy na rynku od 2003 roku i jesteśmy obecnie jedną z nielicznych firm informatycznych w Polsce oferującą tak szeroką gamę systemów Enterprise Resource Planning oraz częścią…” Source: RevenueBase Database · checked Sep 24, 2026
9	Pretius	Strong evidence	Warsaw, PolandHQ checked Sep 24, 2026	51-200	161 contacts →
	Strong evidence “Pretius is a software development company that specializes in crafting custom software solutions and delivering tangible business value.” Source: RevenueBase Database · checked Sep 24, 2026
10	9bits	Partial evidence	Warsaw, PolandHQ checked Sep 24, 2026	51-200	147 contacts →
	Partial evidence “9bits is a high-grade software developer that designs custom applications for global clients.” Source: RevenueBase Database · checked Sep 24, 2026
11	Brights	Strong evidence	Warsaw, PolandHQ checked Sep 24, 2026	51-200	143 contacts →
	Strong evidence “At Brights, we're not just another software development agency but your valued collaborative partners.” Source: RevenueBase Database · checked Sep 24, 2026
12	XB Software	Strong evidence	Warsaw, PolandHQ checked Sep 24, 2026	201-500	140 contacts →
	Strong evidence “XB Software is a custom software development company that offers outsourcing & outstaffing services for full-cycle development.” Source: RevenueBase Database · checked Sep 24, 2026
13	Vilmate LLC	Partial evidence	Warsaw, PolandHQ checked Sep 24, 2026	51-200	119 contacts →
	Partial evidence “Since 2012, Vilmate has been creating software for businesses across various industries.” Source: RevenueBase Database · checked Sep 24, 2026
14	Celadonsoft	Partial evidence	Warsaw, PolandHQ checked Sep 24, 2026	51-200	97 contacts →
	Partial evidence “With a thoughtful approach to our clients’ goals, we help businesses and startups get their innovative software projects done on time.” Source: RevenueBase Database · checked Sep 24, 2026
15	Unity-T Group Sp. Z O.O. Sp.K	Indirect evidence	Warsaw, PolandHQ checked Sep 24, 2026	51-200	94 contacts →
	Indirect evidence “Unity-t Group działa na rynku od roku 2002.” Source: RevenueBase Database · checked Sep 24, 2026
16	Mitrix Technology	Partial evidence	Warsaw, PolandHQ checked Sep 24, 2026	51-200	70 contacts →
	Partial evidence “At Mitrix, AI development is one of our main specialties - but it’s only one part of the story.” Source: RevenueBase Database · checked Sep 24, 2026
17	Plavno	Strong evidence	Warsaw, PolandHQ checked Sep 24, 2026	51-200	69 contacts →
	Strong evidence “Plavno is a premier software development house with over 15 years of experience and a highly qualified team of experts in your industry.” Source: RevenueBase Database · checked Sep 24, 2026
18	Rubyroid Labs	Strong evidence	Warsaw, PolandHQ checked Sep 24, 2026	51-200	63 contacts →
	Strong evidence “Rubyroid Labs is a Software Development business, specializing in Ruby on Rails and mobile development, eCommerce and web design.” Source: RevenueBase Database · checked Sep 24, 2026
19	Mainsoft	Strong evidence	Warsaw, PolandHQ checked Sep 24, 2026	51-200	60 contacts →
	Strong evidence “Mainsoft is a software development company, which is focused on web and mobile application development.” Source: RevenueBase Database · checked Sep 24, 2026
20	Mereb Technologies	Indirect evidence	Warsaw, PolandHQ checked Sep 24, 2026	51-200	56 contacts →
	Indirect evidence “Mereb Technologies helps European SaaS scale-ups ship faster by giving you dedicated, senior engineering teams under an EU contract.” Source: RevenueBase Database · checked Sep 24, 2026
21	Improveit Solutions	Strong evidence	Warsaw, PolandHQ checked Sep 24, 2026	51-200	54 contacts →
	Strong evidence “is a - software development company with on the market and senior Web, Mobile, AI, and DevOps engineers.+ worldwide, we help you build high-quality digital products, scale your…” Source: RevenueBase Database · checked Sep 24, 2026
22	teacode.io	Strong evidence	Warsaw, PolandHQ checked Sep 24, 2026	51-200	53 contacts →
	Strong evidence “TeaCode is a forward-thinking software development company that combines advanced technologies with AI to create innovative digital solutions.” Source: RevenueBase Database · checked Sep 24, 2026
23	Pragmile	Partial evidence	Warsaw, PolandHQ checked Sep 24, 2026	51-200	52 contacts →
	Partial evidence “Developing software on your own, but something’s not quite right?” Source: RevenueBase Database · checked Sep 24, 2026
24	Llinformatics	Strong evidence	Warsaw, PolandHQ checked Sep 24, 2026	51-200	52 contacts →
	Strong evidence “LLInformatics is a software consulting and development firm that builds customized, compliant, intelligent digital solutions and products, and conducts technical audits and…” Source: RevenueBase Database · checked Sep 24, 2026
25	Itsg Global	Strong evidence	Warsaw, PolandHQ checked Sep 24, 2026	51-200	51 contacts →
	Strong evidence “We are ITSG Global, an innovative software development company with a commitment to driving growth and digital transformation.” Source: RevenueBase Database · checked Sep 24, 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: customized 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 customized software development companies.
Partial evidence: Its own public description names part of customized 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 customized 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 222 customized software development companies based in Warsaw, Poland

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 3,376 reachable decision-makers.

Free signup · no credit card

View the full list →

Customized software development companies based in Warsaw, Poland at a glance

As of Sep 24, 2026

33.2%Verified-email coverage

45.8Average contacts per company

11-50Median size (employees)

100.0%Largest-city concentration · Warsaw

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

11-50

101

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole Poland list rather than for Warsaw, so it is reported there. Company counts and contact totals on this page are exact for Warsaw, over 222 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 customized 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 Warsaw, Poland whose own description of what they do matches “customized 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 customized 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 customized software development companies, and records with no verified work email. Companies headquartered outside Warsaw 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, 3,376 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 24, 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.

Customized software development companies by metro in Poland

Customized software development companies in Warsaw222
Customized software development companies in Warszawa152
Customized software development companies in Wroclaw123
Customized software development companies in Krakow108
Customized software development companies in Poznan79
Customized software development companies in Gdansk54
Customized software development companies in Lodz45
Customized software development companies in Katowice35
Customized software development companies in Rzeszow32
Customized software development companies in Bialystok26

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 customized 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 customized software development companies are there based in Warsaw, Poland?

RevenueBase identified 222 customized software development companies headquartered in Warsaw, Poland 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?

Andersen LAB, headquartered in Warsaw, tops this list with the largest team on record.

Which city has the most customized software development companies?

Warsaw leads with 222 headquartered companies, followed by Warszawa (152) and Wroclaw (123).

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 3,376 verified decision-maker contacts tracked across these 222 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 24, 2026.

Ready to reach these companies? Verified emails and direct dials for all 222 customized software development companies based in Warsaw, Poland. Start with a free account, no credit card.

Download this list →

Related lists

Customized software development companies by geography

Browse the directory

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.