Fony is a free editor for bitmap fonts. The author of this program tried to make it user friendly, but he has not yet gotten around to writing any proper documentation.
Fony is not guaranteed yet to be bug-free, you should always keep backup copies of any fonts you work on.
Here is the type of fonts Fony can load and edit: Windows bitmap fonts (FON, FNT) * TrueType vector fonts * Amiga bitmap fonts * BDF bitmap fonts * Bitmap Font Writer bitmaps
Formats that can be saved/exported: Windows bitmap fonts (FON, FNT) * BDF bitmap fonts * Bitmap Font Writer bitmaps * Custom bitmaps * Raw binary data