Company lists · Data verified August 2026

Top 25 Custom software development companies based in Poland

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 1,045 companies tracked

There are 1,045 custom software development companies headquartered in Poland (RevenueBase, August 2026). RevenueBase tracks 14,522 professional contacts across them, including 4,864 with verified work emails and 182 with mobile numbers. Warsaw is the largest hub.

This list covers custom software development companies headquartered in Poland, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

1,045Companies

14,522Contacts tracked

4,864Verified emails

182Mobile numbers

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The 25 largest custom software development companies based in Poland

Ranked by team size

Top 25 of 1,045 custom software development companies based in Poland, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Asseco Business Solutions S.A	Lublin	501-1,000	671	492
2	Modsen	Warszawa	501-1,000	369	43
3	Instinctools	Warsaw	201-500	362	171
4	First Line Software	Warsaw	201-500	360	190
5	SCALO	n/a	501-1,000	346	242
6	Techmagic	Krakow	201-500	339	156
7	The Software House	Warsaw	201-500	279	188
8	Nexio Management	Warsaw	501-1,000	241	92
9	Miquido	Krakow	201-500	185	103
10	SCAND	Warszawa	201-500	183	7
11	Syberry	Krakow	201-500	181	60
12	9bits	Warsaw	51-200	152	26
13	Opinov8	Wroclaw	201-500	152	4
14	Solwit SA Part Of Alten Group	Gdansk	201-500	147	89
15	Vilmate LLC	Warsaw	51-200	116	47
16	Transition Technologies-Software	Ostrow Wielkopolski	201-500	110	67
17	Inspeerity	Warsaw	51-200	104	73
18	Softwaremill	n/a	51-200	101	64
19	Reenbit	Warsaw	51-200	100	56
20	Softwarehut	Szczecin	51-200	99	56
21	Jetsoftpro	Wroclaw	201-500	96	37
22	Unity-T Group Sp. Z O.O. Sp.K	Krakow	51-200	94	31
23	Sirocco	Warszawa	51-200	83	51
24	AKVEO	Warsaw	51-200	82	47
25	LBPRO	Lodz	51-200	82	1

Showing 25 of 1,045 custom software development companies based in Poland

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Custom software development companies based in Poland at a glance

As of Aug 28, 2026

11-50Median size (employees)

WarsawLargest hub · 166 HQs

182Contacts with mobile numbers

10Emails re-verified in last 30 days

Companies by employee count

1-10

514

11-50

405

51-200

103

201-500

501-1,000

Custom software development companies by metro

Metro	Companies
Custom software development companies in Warsaw	166
Custom software development companies in Warszawa	111
Custom software development companies in Krakow	82
Custom software development companies in Wroclaw	80
Custom software development companies in Poznan	64
Custom software development companies in Gdansk	38
Custom software development companies in Lodz	37

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “custom software development companies”, with match quality audited by blind human judging, and headquartered in Poland.
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: Contact records re-verify on a rolling cadence; 10 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many custom software development companies are there based in Poland?

There are 1,045 custom software development companies headquartered in Poland as of August 2026 (RevenueBase).

What is the largest company on this list?

Asseco Business Solutions S.A, headquartered in Lublin, tops this list with the largest team on record.

Which city has the most custom software development companies?

Warsaw leads with 166 headquartered companies, followed by Warszawa (111) and Krakow (82).

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 4,864 verified decision-maker contacts tracked across these 1,045 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.