Lost Thaumaturgy by APengu
This mod adds a lot of content from Thaumcraft 2 and adds plenty of neat and useful magical tools that you may need to use while playing.
Orienteering Mod by Xu Kai (Peking University)
This mod helps you organize and run orienteering in Minecraft by establishing a checkpoint and scoring system.
Default World Generator by FireBall1725
A small mod to automatically select the default world generator for single player