HEATKEYS

CentOS -- Community ENTerprise Operating System is a free rebuild of source packages freely available from a Prominent North American Enterprise Linux vendor.

Revolution Systems is a leader in Open Source consulting and support. Specializing in infrastructure scaling, development, and training using Django, Python, and PostgreSQL.

Linux blog by Vivek - Includes news, help, tutorials, programming, tips and how-to guides for Linux, UNIX, and BSD.

Provides Instruction Guides, How-Tos, Troubleshooting Tips and Tricks on Linux, Database, Hardware, Security, Web and Open Source for both Newbies and Geeks - TheGeekStuff by Ramesh Natarajan

Discussion forums for Linux users.

Words of wisdom from a Linux engineer focused on information security

Do more with less: Technology news, howtos, tips and tricks for the sysadmin or casual technology user. Find out more about performance optimization, Windows and Linux server tuning, enterprise networks, clustering, computer security, commercial and ...

Parallels is a worldwide leader in automation and virtualization software that optimizes computing for consumers, businesses, and service providers. It allows you to run Mac virtual machines and virtual PC.