* [BR Doc v4.0.0](https://github.com/paemuri/brdoc) – Brazilian national document and phone number validator for Go covering CPF, CNPJ, CEP, CNH, PIS/PASEP, RENAVAM, CNS, license plates, and voter ID.

* [validation-br 2.0.0](https://github.com/klawdyo/validation-br) – Brazilian document validation library supporting CPF, CNPJ (numeric and alphanumeric), CNH, PIS/PASEP, voter ID, RENAVAM, judicial and postal tracking numbers, plus fake data, masking, and check-digit calculation.