Mods/Tekkit

Tekkit is a collection of mods available in the Technic Pack from Technic. It is available for both client and server, and additional Bukkit mods can be installed on top of Tekkit.

Included mods
Tekkit 1.1.10 (Recommended Version) for Minecraft 1.5.1 contains the following mods: LIST WILL BE FINISHED SOON

Tekkit Classic 3.1 for Minecraft 1. contains the following mods:

System requirements
Tekkit 3.1.3 currently uses Minecraft 1.5.1 System requirements are higher than that of vanilla Minecraft due to the extra blocks and items added to the game, so reducing graphical settings may be necessary.
 * If you set an in OptiFine low graphics is run on a lowend PCs.