Handling UTF-8

[Polykarpos Karamaoynas]

Hello to everybody, i'd like to know if there is any available library which handles UTF-8 strings. I intend to make a non graphic application interface which takes as input unicode strings, handles them and communicates with data base by quering it or informing it with UTF-8 format. Is there anything available that could help me for this?   Thank you in advance.   Polykarpos