InfinityExpansion adds a bunch of new machines and resources, expanding the endgame of Slimefun by a large margin.
Make a new issue or pull request on the GitHub Issues page.
A Texture Pack that adds texture for some items in this addon (requires Optifine):
https://github.com/Mooy1/InfinityExpansion/releases/tag/v1
Some stats about the addon including current server count and player count are available here: