I am a software developer by profession, and run a website called Sulaco OpenGL Delphi Pascal Game Development where I give most of my source code (OpenGL and game development related) away for free.
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.