Rar

CentOS comes with no Rar/Unrar support by default. Here's a quick tutorial to install them both on CentOS 32 and 64 bit.

MySQL load can be really heavy on some servers, especially if you are hosting big communities, reducing the load of MySQL is in that case is essential. To help us achieving this task we will use MySQLTuner.
MySQLTuner is a script written in Perl that allows you to review a MySQL installation quickly and make adjustments to increase performance and stability.  

MySQL logo

Blender is the free open source 3D content creation suite widely used for making animated movies. Blender is available for all major operating systems under the GNU General Public License. Here is a nice collection of 4 short animated movies all produced by the Blender foundation and of course all realized with this fantastic open source program.

Sintel

Installing mods H264 and FLV streaming means you can seek to any position during video, and browser (flash player) will buffer only from this position to the end.