Company lists · Data refreshed November 2026

Top 17 React.js development companies based in Poland

RevenueBase identified 40 company matches for react.js development companies associated with Poland as of November 2026 and tracks 416 professional contacts across them, including 210 with verified work emails. Warsaw is the largest hub.

This list covers company matches for react.js development 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 November 6, 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 Nov 6, 2026 How this list was built
40Companies
416Contacts tracked
210Verified emails
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The 17 largest react.js development companies based in Poland

Ranked by team size
Top 17 of 40 company matches for react.js development companies based in Poland, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchWrocław, PolandHQ recorded Nov 6, 2026201-500238 contacts →

Exact match

“Callstack builds and scales products across platforms, and helps your teams deliver more with AI.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchGliwice, PolandHQ recorded Nov 6, 202611-5026 contacts →

Exact match

“Since 2009, Gorrion has helped 200+ ambitious entrepreneurs and companies turn their vision into reality with remarkable software.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchPoznań, PolandHQ recorded Nov 6, 20261-1013 contacts →

Exact match

“We are Kivy Software - experienced software development and design house based in Poznan, Poland.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchWarsaw, PolandHQ recorded Nov 6, 20261-1012 contacts →

Exact match

“We are a software development company specializing in high-quality mobile applications for iOS and Android, written in React Native.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchŁódź, PolandHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Lowgular - Angular Experts - Your Frontend Development Partner Lowgular is your trusted partner for front-end development.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchWarsaw, PolandHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“Outsourcing web development agency.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchWarsaw, PolandHQ recorded Nov 6, 20261-108 contacts →

Exact match

“No input Signal is a software development house based in Warsaw (Poland).”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchCracow, PolandHQ recorded Nov 6, 20261-107 contacts →

Exact match

“We are the team of experienced developers, designers and project managers which loves to combine great design and React, React Native and Node.js”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchPoznań, PolandHQ recorded Nov 6, 20261-107 contacts →

Exact match

“We specialize in building web applications with Next.js and React.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchGliwice, PolandHQ recorded Nov 6, 202611-506 contacts →

Exact match

“React Poland is a web and mobile applications development software house located in Poland.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchLublin, PolandHQ recorded Nov 6, 202611-506 contacts →

Exact match

“TheBrain Software House is a web and mobile application development company that covers everything from devops to automated testing, low- and high-level programming, back-end and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchGorzów Wielkopolski, PolandHQ recorded Nov 6, 202611-505 contacts →

Exact match

“Our mission is to look at products beyond the standard frames.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchWarsaw, PolandHQ recorded Nov 6, 20261-105 contacts →

Exact match

“Looking for a reliable partner to build or maintain your web application?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchPoznań, PolandHQ recorded Nov 6, 20261-105 contacts →

Exact match

“We are a small, boutique software house specializing in web development.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchWroclaw, PolandHQ recorded Nov 6, 20261-104 contacts →

Exact match

“Dedicated web software development for individual business needs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchWrocław, PolandHQ recorded Nov 6, 20261-102 contacts →

Exact match

“We are a software house, specializing in creating and developing dedicated products.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchWarsaw, PolandHQ recorded Nov 6, 20261-102 contacts →

Exact match

“Scaia Technologies is a young software development company founded by highly qualified engineers with impressive experience.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 17 of 40 react.js development companies based in Poland

See the full list, filter by size, metro and specialty, and access 210 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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React.js development companies based in Poland at a glance

As of Nov 6, 2026
50.5%Verified-email coverage
10.4Average contacts per company
1-10Median size (employees)
27.5%Largest-city concentration · Warsaw
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
28
11-50
11
201-500
1

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 “react.js development 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 210 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 November 6, 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 “react.js development companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many react.js development companies are there based in Poland?

RevenueBase identified 40 company matches for react.js development companies associated with Poland as of November 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?

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

Which city has the most react.js development companies?

Warsaw leads with 11 company records, followed by Wroclaw (6) and Poznan (4).

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 210 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 November 6, 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.