K-Lite Mega Codec Pack

The K-Lite Mega codec pack is exactly what you’re looking for. It’s the big daddy of all codec packs. This mega combination pack is a bundle that includes players, containers and also the K-Lite codec pack.

This free-to-use pack comes with more than just codecs. Its repertoire includes players and codec information tools. The best thing about the pack is that you can choose the applications you want to install. The one problem with this bundle is the problem of plenty: a lot of the codecs provided by the pack lie unused. The pack contains the following:

Media Player Classic
Video player similar in appearance to version 6.4 of the Windows Media Player, but not affiliated with Microsoft.

BSPlayer
A video player

Real Alternative
A player that allows you to play RealMedia files (usually .rm or .ram) without having to install the official RealPlayer.

QuickTime Alternative
A player that allows you to play QuickTime files (usually .mov) without having to install the official QuickTime player.

Sherlock
Tells you what codecs you have installed on your computer.

GSpot Codec Information Appliance
A tool that can tell you exactly which codecs are needed to play a certain video file.

Numerous codecs
The download has most of the codecs you will need, including the popular DivX and XVid.