regon

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.

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.

Model Context Protocol server for the Polish GUS REGON business register (BIR1 API).

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

Elixir 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

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

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.

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

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

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