BSD
- OpenBSD Ports
- FreeBSD FreshPorts
- BSDNow TV
- Daemon Forums
- LiveUSB with OpenBSD- Bootable OpenBSD flashdrive for your keyring
- FOSDEM is a free event that offers open source communities a place to meet, share ideas and collaborate.
- BSD versus Linux
- C programming tutorial
- C Boot Camp
- The BSD Certification Group
- Warren Block hints for setting up FreeBSD
- Basic C Programs
- C programming Solved Programs/Examples with Solutions
- The GNU C Library
- OpenBSD and other stuff from Keith Burnett
- The C Programming Language, 2nd Edition, by Kernighan and Ritchie, answers.
- Scientific Linux - can run directly as LiveUSB.
- Minix 3 Microkernel OS