EasyABC is an open source ABC editor for Windows, OSX (including Lion) and Linux.
This version features among other things tools for sorting the tunes and creating incipits.
It is now also possible to open multiple ABC files at the same time, and extended characters are handled better. If you were to suddenly start typing in chinese and then try to save the file EasyABC would ask you if you do not want to use utf-8 in case you had not already added an abc-charset field. New in this version is that a file that starts with "%abc-2.1" is assumed to be utf-8 encoded.