HEATKEYS

Since 1983, developing the free Unix style operating system GNU, so that computer users can have the freedom to share and improve the software they use.

The Linux Documentation Project is working towards developing free, high quality documentation for the Linux operating system. The overall goal of the LDP is to collaborate in all of the issues of Linux documentation.

Подборка документации и электронных книг по сетевым технологиям, программированию и системному администрированию. Подготовка к сертификационным экзаменам Cisco.

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

Techexams.net offers free resources for IT certifications including MCSE, MCTS, MCITP, Network+, Security+, CCNA, CCNP, CCIE, CISSP, and CWNA practice exams, study guides and forums

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

Engage, Collaborate, Co-Create and Share your knowledge by asking and answering questions in the discussion forums, commenting on blogs, rating videos, and sharing tips and advice in the wiki-style documents on configuring, troubleshooting, and desig...

Discussion forum for cPanel software