bitedit
bitedit is a simple ncurses program for editing a file. It allows direct editing of the individual bits in a graphical fashion. This is useful for directly editing existing bitmap font files, such as Linux psf console fonts.

About
Audience: Linux console users
Requires: Linux or similar, C compiler, hacking intent
Language: C
Licence: GPL

Download and documentation

If you (also) use this program, let me know (or even better, send a postcard...)