Utility library for validation of PESEL, NIP, REGON, identity card etc. Aimed mostly at Polish enviroment. [Polish] Walidacja numerów pesel, nip, regon, dowodu osobistego.

GUS REGON Internet Database Client

BIR1 - GUS REGON client to official database of polish companies

Simple, ruby wrapper for Polish GUS REGON database BIR1 (Baza Internetowa Regon 1)

Python 3 API Client for Polish REGON database (Baza Internetowa Regon - BIR)

Simple Polish Validation rules for Laravel and Lumen framework

Check if a number is a valid REGON.

Elixir library for validate polish numbers: PESEL, NIP, REGON, IBAN (PL)

A library for validating PESEL, NIP and REGON numbers.

🇵🇱 TypeScript wrapper for Polish company lookup by NIP — Biała Lista MF API. No API key required.

Library for validate polish numbers: PESEL, NIP, REGON, IBAN (PL)

Biblioteka .NET do pobierania danych firm po NIP, REGON lub KRS bez klucza API, zwracająca dane w formacie JSON

Laravel integration for slashlab/numerik — validation rules for PESEL, NIP, REGON, KRS, NRB, VAT-EU, IBAN, ID Card, and Passport

Validate and parse Polish identification numbers: PESEL, NIP, REGON, KRS, NRB, IBAN, VAT-EU, ID card, and passport. TypeScript-first, zero runtime dependencies.

Modern PHP 8.3+ library for validating and parsing Polish identification numbers (PESEL, NIP, REGON, KRS, NRB, VAT-EU, IBAN, ID Card, Passport)

A .NET client library for the Polish REGON (GUS BIR1) SOAP API — query company data from the National Business Registry by NIP or KRS number.

ActiveX Validator

Browser extension that speeds up searching informations about companies in Poland

Seeded faker for valid Polish test data: NIP, PESEL, REGON, IBAN, ID cards, names, companies, addresses. Zero dependencies.

A library for accessing the Polish REGON database via the official API.