Importer for FontForge (SFD) files in Glyphs.
I wanted to be able to quickly look at FontForge files without going through the hassle to install FontForge on macOS, so I hacked this little plugin. It is not perfect yet, but imports the glyph outlines well enough.
Let me know if something is missing.
You can start the import via
File > Import > FontForge File....