I liked Safari Source, but it has been a long time since it worked. Apparently now it does work, but not if you use Saft, for some reason. PithHelmet, which is also a SIMBL plug-in, works just fine now with the latest version of SIMBL (0.9.7); and if I don't use Saft to launch Safari, Safari Source shows up as expected in the Safari preferences. But if I do use Saft, Safari Source disappears from the preferences. I'm not sure what the problem is, but I think it's time all these old Safari hacks took advantage of the new Safari extensions capability and left all these compatibility issues behind. I would probably be willing to pay for the free ones, like Safari Source, if it was developed as an extension rather than the now very problematic SIMBL plug-in architecture. I have paid, after all, for Saft and donated to PithHelmet.