Can't find OpenCubicChunks

I've tried searching with all known names of the mod (CubicChunks, CubicWorld, World gen, etc) and even terms from its description, but it still just says "No mods found". When I go to suggest the mod using the curseforge link, it says "This mod is already available".

Is there a term I have to search specifically?

This link doesn't work, when i click it, it just says this pluggin isn't available.