Operating Systems

Debian and Ubuntu - Linux distributions utilizing the DEB package format
- DebianPackaging
Red Hat and CentOS - Linux distributions utilizing the RPM package format
Gentoo - Linux distributions utilizing the ebuild package format
FreeBSD - rock-solid server platform.
- FreeBSD Port Tips
- pFsense - firewall & load-balancer based on FreeBSD
Darwin - under the hood of Apple Macintosh OS X
LinuxBSDPackageManagementTips
Windows 98