HEATKEYS

AlternativeTo let you find new PC (Windows, Linux), Mac, iPhone, Android, Web/Online software based on applications you already know instead of useless categories. We make each application into a category. (AlternativeTo is sometimes called alternati...

Linux.com - For the community, by the community, Linux.com is the central source for Linux information, software, documentation, how-tos and answers across the server, desktop/netbook, mobile, and embedded areas.

SourceForge.net. Fast, secure and free downloads from the largest Open Source applications and software directory

Xen Project: Open Source Hypervisor, High Performance Clouds, Free Software

Tecmint - Linux Howtos, Tutorials, Guides, News, Tips and Tricks.

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

IT Best Practices, How-tos, Product Reviews, discussions, articles for IT Professionals in small and medium businesses

Zimbra provides open source email and calendar groupware software, Zimbra is a popular choice for Linux and Mac OS X email servers and supports SaaS deployment, appliances and virtualization platforms.

David A. Wheeler

Free Web Resources Everyday - WebResourcesDepot

ISPConfig manages webservers, mailserver, BIND DNS, proftpd vsftpd and pure-ftpd FTP server, MySQL databases, spamassassin and disk quota with an easy to use interface for administrators, resellers and clients