GNUPanel

Open Source Control Panel

GNUPanel is a completely free (GPL) replacement for proprietary web hosting automation software. GNUPanel is under development, focusing on translation efforts that permit the entire free software community to participate. Currently, GNUPanel is Debian-centric, however, a distro-agnostic approach is planned.
It is written mainly in PHP 5 and initially designed to run on 32 or 64 bits Debian GNU/linux.

VHCS for Linux

Open source web server administration / Control Panel

VHCS is a open source web-based interface for easy web server administration for Linux. VHCS is designed for hosting and internet service providers and IT professionals. With VHCS you can configure your server and applications, create user with domains with a few point-and-click operations that take less than a minute. VHCS manage Apache vhosts, DNS, email and FTP accounts, quotas, create statistics and much more.

Presently www.vhcs.net/‎ is effected by Malware!!!

CVS – Concurrent Versions Systems

Open Source Version Control System

CVS is the Concurrent Versions System, the dominant open-source network-transparent version control system. It was first released in 1986. CVS is the de facto standard and is installed virtually everywhere. It’s useful for any designer or developer for backing up and sharing files. Tortoise CVS is a great client for CVS on Windows, and there are many different IDEs, such as Xcode (Mac), Eclipse, NetBeans andEmacs, that use CVS.

SVN – Subversion

Open Source Version Control System

SVN or Subversion is the most popular version control system. Most open-source projects (SourceForge, Apache, Python, Ruby and many others) use it as a repository. Google Code uses Subversion exclusively to distribute code. For Windows, Tortoise SVN is a great file browser for viewing, editing and modifying your Subversion code base. For Mac, you have to use Versions. For Apple’s developer environment you have to use Xcode.