Ok, it’s quite a while since FontForge is around. But it’s really a great Open Source tool for nearly every platform. It just helped me to convert some old Windows Type-1 Fonts to TrueType for use on Mac OS X. I works perfectly and has many options. Yes, it’s user interface is very X11-ish and not very sexy – but nevermind it’s clear and understandable and at least it’s a graphical user interface.