Fabric – a set of libraries that allow third-party developers to modify the game, in other words, run mods in minecraft 1.14 and higher. Factories are still in an early stage of development.
Fabric Mod for Minecraft 1.15.2/1.15/1.14.4
This library is recommended for installation by all players and developers who are associated with mods. For the stable operation of many mods, you may need Fabric API.