I decided to check on the status of font editing programs for Linux today,
and, alas, there isn't much to report.
Raph Levien's
gfonted appears to
be stillborn;
there's a new project named
Gill,
based on it, which aspires to be something like Adobe Illustrator, though is
still in an early stage of development (though does have some pretty pictures
on the page).
Meanwhile,
Spif is
still "not yet available for general use".