GitHub - topisani/1.9-Realistic-Terrain-Generation: The 1.9 version of the Realistic Terrain Generation mod for Minecraft.
TerraForged our realistic terrain generator has just been released for 1.15.2! : r/feedthebeast
I've been making another terrain generator focused on making the world more realistic with better mountain terrain, new biomes, wider rivers, custom trees, etc. Here's a screenshot of the 'Alpine' area -