- Tips for Unicode in OCaml.
- uutf: Streaming Unicode codec. This library is well maintained, and up to date with the latest Unicode standard.
- Camomile: An older Unicode support library. Covers only Unicode 3.2. Additionally, Camomile requires a whole bunch of data files to be present in the correct place, making distribution of executables difficult.
- ubase: Library for removing diacretics (accents and such) from UTF-8 strings.