Linux, Unix and Free Software/Open Source
- LinuxQuestions.org — Probably the biggest Linux help site and forum. More than 200K users.
- Sourceforge — Open Source software repository.
- UNIX history — a big graph showing Unix system history from 1969 till now.
- QtCentre — New forum about Qt library and programming in general.
- 7thguard —Free Software/Open Source news (in Polish).
- Slashdot — News site. Often very hot discussions (or simply flamewars).
The real world