Company lists · Data refreshed September 2026

Top 19 Legacy app modernization companies based in Poland

Name: Legacy app modernization companies based in Poland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 40 companies tracked

RevenueBase identified 40 company matches for legacy app modernization companies associated with Poland as of September 2026 and tracks 5,355 professional contacts across them, including 2,146 with verified work emails. Warsaw is the largest hub.

This list covers company matches for legacy app modernization companies associated with Poland, 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 20, 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 20, 2026 How this list was built

40Companies

5,355Contacts tracked

2,146Verified emails

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The 19 largest legacy app modernization companies based in Poland

Ranked by team size

Top 19 of 40 company matches for legacy app modernization companies based in Poland, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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	Andersen LAB	Exact match	Warsaw, PolandHQ recorded Sep 20, 2026	1,001-5,000	3,628 contacts →
	Exact match “Andersen – your global software development partner Andersen is a global software development company with over 18 years of experience supporting businesses worldwide in their…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2	Britenet	Exact match	Warsaw, PolandHQ recorded Sep 20, 2026	1,001-5,000	639 contacts →
	Exact match “With 18+ years of elite software development expertise, we've established ourselves as a leading European IT consultancy specializing in analytics-powered digital transformation.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3	The Software House	Exact match	Warsaw, PolandHQ recorded Sep 20, 2026	201-500	279 contacts →
	Exact match “12+ years of custom software development centered on client satisfaction.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4	Pretius	Exact match	Warsaw, PolandHQ recorded Sep 20, 2026	51-200	161 contacts →
	Exact match “Pretius is a software development company that specializes in crafting custom software solutions and delivering tangible business value.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	Merixstudio	Exact match	Poznań, PolandHQ recorded Sep 20, 2026	51-200	84 contacts →
	Exact match “Global #1 Software Company on Clutch We design, build and modernize digital products, platforms and connected systems for mid-size and enterprise businesses - with AI-augmented…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6	Peoplemore	Exact match	Kraków, PolandHQ recorded Sep 20, 2026	51-200	59 contacts →
	Exact match “People More is a software development company focused on - Legacy Systems Modernization- Bespoke Software Development- Team Augmentation.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7	Ready4s	Exact match	Kraków, PolandHQ recorded Sep 20, 2026	51-200	42 contacts →
	Exact match “We're based in Krakow, Poland, aka.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8	Cleverdev Software	Exact match	Warsaw, PolandHQ recorded Sep 20, 2026	51-200	41 contacts →
	Exact match “CleverDev Software is a product engineering company building software systems that improve how businesses operate and scale.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9	TYMIQ	Exact match	Poznan, PolandHQ recorded Sep 20, 2026	51-200	36 contacts →
	Exact match “Reliable Software Development Company Founded: October 1, 2018 TYMIQ GmbH is a trusted software development company dedicated to helping mid-size and large businesses achieve…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	3qcode	Exact match	Warsaw, PolandHQ recorded Sep 20, 2026	11-50	27 contacts →
	Exact match “3Q oznacza Quick, Quality & Quest i są to wartości które nas charakteryzują stanowiąc DNA naszej firmy.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11	Inwedo	Exact match	Łódź, PolandHQ recorded Sep 20, 2026	11-50	25 contacts →
	Exact match “Inwedo works with mid-size and enterprise organizations to improve the way their business processes run.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	300brains	Exact match	Warsaw, PolandHQ recorded Sep 20, 2026	11-50	17 contacts →
	Exact match “We provide dedicated IT teams for-maintaining and servicing existing IT solutions -support of legacy software solutions -software maintenance -integration with COTS and SaaS…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13	Jazzy Innovations	Exact match	Gliwice, PolandHQ recorded Sep 20, 2026	11-50	16 contacts →
	Exact match “At Jazzy Innovations, we redefine what it means to be a boutique software house.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14	Sygnisoft Sp. Z O.O	Exact match	Warsaw, PolandHQ recorded Sep 20, 2026	11-50	15 contacts →
	Exact match “About us Analysts, architects, programmers, testers, graphic designers and project managers all work for our customers' success.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15	Accesto	Exact match	Wrocław, PolandHQ recorded Sep 20, 2026	11-50	15 contacts →
	Exact match “Meet experts in PHP modernization.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16	Soulab	Exact match	Lublin, PolandHQ recorded Sep 20, 2026	11-50	15 contacts →
	Exact match “Software development company.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17	Thinksoft	Exact match	Warsaw, PolandHQ recorded Sep 20, 2026	11-50	15 contacts →
	Exact match “Thinksoft LLC is a European software development company founded by a group of experienced and qualified specialists, who have been in the IT industry since 2005.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18	Virtas Techniczny Partner OD Trudnych Tematów Legacy	Exact match	Kraków, PolandHQ recorded Sep 20, 2026	1-10	2 contacts →
	Exact match “Virtas – Partner technologiczny od trudnych tematów w e-commerce.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19	Goodbyte	Exact match	Wroclaw, PolandHQ recorded Sep 20, 2026	1-10	1 contacts →
	Exact match “We will modernize your software.” Recorded in the RevenueBase company graph · Sep 20, 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 “legacy app modernization companies”. 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 19 of 40 legacy app modernization companies based in Poland

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Legacy app modernization companies based in Poland at a glance

As of Sep 20, 2026

40.1%Verified-email coverage

133.9Average contacts per company

11-50Median size (employees)

42.5%Largest-city concentration · Warsaw

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured worldwide rather than for Poland, so it is reported there. Company counts and contact totals on this page are exact for Poland, over 40 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 Poland whose business descriptions match “legacy app modernization companies” 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 2,146 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 20, 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.

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 “legacy app modernization companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many legacy app modernization companies are there based in Poland?

RevenueBase identified 40 company matches for legacy app modernization companies associated with Poland 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?

Andersen LAB tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most legacy app modernization companies?

Warsaw leads with 17 company records, followed by Wroclaw (6) and Krakow (5).

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 2,146 professional contacts with verified work emails tracked across these 40 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 20, 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.