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.
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.
Download Links:
1.15.2: fabric_loader_0.7.5build.178_1.15.2
1.15: fabric_loader_0.7.2build.175_1.15
1.14.4: fabric_loader_0.7.2build.174_1.14.4