> Fil-C is one of the most unrated projects I've ever seen
When's the last time you told a C/C++ programmer you could add a garbage collector to their program, and saw their eyes light up?
Exactly, the Venn diagram of programmers using c/c++ and programmers who can use a garbage collector for their workload is two circles.
A lot of the frameworks do it. There's RC in GNOME/GTK, C++ stdlib, and built into Objective-C.
And of course it's easy to think of lots of apps that heavily use those or another form of GC.