C/C++
A garbage collector for C and C++ - The Boehm-Demers-Weiser conservative garbage collector (aka libgc) (119 visits)
http://www.hpl.hp.com/personal/Hans_Boehm/gc/
Embedded C++ - A subset of C++ for embedded applications (150 visits)
http://www.caravan.net/ec2plus/
The LEMON Parser Generator - LALR(1) parser generator (results both re-entrant and thread-safe) (141 visits)
http://www.hwaci.com/sw/lemon/