Optifine Alternatives

Emissive, Random & Custom texture support for entities in resourcepacks just like Optifine but for Fabric

EMF is an, OptiFine format, Custom Entity Model replacement mod available for Fabric and Forge.

A Fabric mod that allows for efficient connected textures

Re-implements MCPatcher's CIT (custom item textures from optifine resource packs)

Allows resource packs to define custom skyboxes.

Blazing fast custom GUI textures on Fabric and Quilt with built-in OptiFine custom GUI resource pack support

Adds resourcepack features and a GUI to configure OptiFine alternatives more conveniently.

FabricSkyBoxes Interoperability for MCPatcher/OptiFine Skies

Customize Map Color, Block Colors, Colormaps and Block Sounds, Biome Colors, Dye Colors. Supports Optifine format. For Resource Packs

Fusion allows resource packs to use additional texture and model types such as connected textures!

Default Connected Textures with Fusion

Addons such as Clear Glass to Midnighttigger's Default Connected Textures