Everness
SaKeL

Adds many new biomes, items and blocks.

Loria (alpha)
siegment

Survival in hardcore acid-alien sci-fi themed world

Placeable Buckets for Catching Rainwater
Noodlemire

Allows empty buckets to be placed as nodes in order to collect rainwater.

Falls
Just_Visiting

A Particle-based Waterfalls/Lavafalls Mod

Better Ice
TheFanne

Modifies ice so that it melts into water when broken, and will be melted by torches

Portal gun
AiTechEye

Portals and stuff