Aurora GSI by Wibble199
Game State Integration server designed for Aurora (but could be used by other applications).
FqC by zero4q (Chris), BunnYcilla4q (Ina)
Tweaks some vanilla behaviour and adds lot's of new stuff.
Variety Chests by SanAndreasP
A mod which adds new chests into Minecraft, which are purely asthetic.
BackTools by iChun
This mod adds a new aesthetic feature onto players. Like its name it shows some tools on the back of the player. These tools are based on the last equipped tool that the player had.
Compressed Blocks Mod by Savage_Killer13
A mod for turning normal blocks and items into a compressed form.