A mod-loader is simply a utility that is designed to do just that: load mods. They serve as technical foundations in the background of installations for an assortment of mods which introduce actual gameplay or aesthetic changes. Mod-loaders also enable mods which utilize them to be compatible with each other. There are a few different mod-loaders, however most mods use either Forge or Liteloader. Given that it is so essential, in this article I will show you how to install Forge and in the next, Liteloader.