* [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.

* [go-pix v1.1.2](https://github.com/fonini/go-pix) – Go library for generating Pix copy-and-paste strings and QR codes for Brazilian instant payments.