Mod managers make it easy to install and uninstall mods for FTL. Use of these utilities is encouraged, as installing mods manually is a very repetetive and time-consuming process.
Grognak's Mod Manager (GMM)Edit
First mod manager to be released, which also implemented the .ftl and .append formats, this program allows to install FTL mods easily.
Important: GMM is no longer being developed, it is advised to use SMM instead.
Slipstream Mod Manager (SMM)Edit
Successor to GMM, Slipstream strives to get rid of bugs that plagued its predecessor. It is also faster and easier to use, and implements several new features, such as pre-processed tags and embedded descriptions.