At http://www.chlug.org/oss_equiv.php you can get a fairly long list, and because I haven’t seen it before, maybe lots of elYsiun users haven’t either. I found some software (qcad and maxima) that is what I’ve been looking for for a long time. You can get lots of great open source alternatives to programs. If you have anything to add, do so so we (alright, they) can have a great list. Let me know what you think!
P. S. I came across this site while I was looking for an open source or free for ever (no shareware) free-roaming game. I love Grand Theft Auto: Vice City and was looking for a game somewhat like that where you can run around and do what you please, but for free. If anyone know’s of such a thing, let me know!
Notice that Blender is the first open source alternative on the list! Go Blender! Woo Hoo! Yeah!