Efficient binary encoding for large alphabets

Library written in C for encoding and decoding data using base32 or base64 (RFC-4648)

A faster alternative to base64 encoding and provides missing base encoding for OpenResty application

Fast and url-safe base64 encoder and decoder for R

This is a set of tools for working with binary files.

small portable base32 algorithm implemented in C.

Base32 encoder/decoder

ISO C library for various base encodings

Apple's open source command line interface to CommonNumerics routines (CRC-8/16/32/64, Base16/32/64)

A reference Implementation of Clockwork Base32 for C

Simple C99 Base16, Base32 and Base64 encode and decode library

base64, base32 encoders and decoders

Library written in C for encoding and decoding data using base32 or base64 (RFC-4648)