blogtestapp
cintro        Some basic examples in C
dpir          Design Pattern in Ruby demo code (C) Russ Olsen
koskela       Test Driven demo code (C) Lasse Koskela
make_demo     Simple make file
misc_<x>      Misc examples in language x
parser        simple html parser demo
processor     spring dependency injection demo
strategyDemo  strategy pattern demo
treetop       Treetop language examples
unittests     some special case unit tests

Most projects are in C, Ruby or Java and for demonstrational purposes only.

For Java projects maven is needed: http://maven.apache.org/