Recent changes (updated 2018-03-13 00:57:00 UTC)
Just a bunch of fairly useful things
RedFlux tools, blocks, teleporation system and dimension builder
"Now works with the latest forge. ChickenBones"
Lib (not a mod) for some of Airbreather's mods
ArmorPlus is a mod based on exploration, killing, building, getting geared up, fight the bosses and explore the depths of your worlds
Allows users to invite friends without being an operator.
pre6 compatible with Forestry 3.4.0
Useful functions for TeamCoS and TeamBR mods
Magical Flower mod
Adds in the aspect of eating villagers... or yourself
Create endless custom decorations using in game materials.
Now maintained by Vexatos
A lib mod for CTD mods.
Adds a customizable tab to the OpenComputers manual.
Core mod for all DoubleDoorDevelopment mods!
Random "ender type" utilities
Companion to EnderIO tech.
Allows tweaking explosions, like the item drop chance
Previously known as Real Stone Tools
Makes it so clay can spawn in the world like an ore
Port of copygirl's mod to 1.7.10, 1.8.8 and 1.9
Farming, renewable energy production as well as the breeding of trees, bees and butterflies.
Utility mod which allows you to render a static biome map in your browser
Library mod for easy creation of guide books.
Simple mod to fix the /help command
A fork of Waila with a rapid update cycle.
Adds tiered metal chests that hold more items
Move items by scrolling with the mouse wheel
Zoom in on items in your inventory
View Items and Recipes
New lumber axes that chop down connected wood.
Memes in bottles
Formerly known as BetterCraft
Dev builds: http://jenkins.qmunity.co.uk/job/Morpheus/
Automatic screenshots and motion for timelapses or other stuff
Builds can also be found here http://www.curse.com/mc-mods/minecraft/224599-mystcraft#t1:other-downloads
Extends block ids to 31999, incompatable with fastcraft, and old saves
Removes vanilla ore generation
Painted Biomes allows using image templates for the biome layout
Pigs passively drop manure, which can be used like Bone Meal in the world, brown dye in recipes, or smelted into bricks.
Pokemobs for Minecraft, Adding Minecraft style Pokemon
A complete rewrite of EE2 for modern Minecraft versions
Makes leaves despawn faster
A dependency created to use for TechReborn mods. Contains useful classes for modding.
New and interesting worldgen structures
Allows making Enchanted Books
Forge based implementation of the SpongeAPI. Adds a few optimizations to the base game for server-side management. Compatible with a majority of mods. Issues can be reported here: https://github.com/SpongePowered/SpongeForge/issues
Adds decorative and functional statues
SuperMiner - Making mining easier...
A remake of Gregtech 2.78 from Minecraft 1.4 http://techreborn.ninja/; requires RebornCore
Small informational mod for mod pack makers or mod devs
See KL's comment: http://redd.it/2c3tu9
Modular, low-tech computers programmable in ASM.
Fixes the derpyness of the dropped items from Paintings and Item Frames
Player-created useful worlds.
(What Am I Looking At?)
An addon for an addon for a plugin so you can play modded Minecraft like a boss
Adds a few vanilla-style food items to the game
Turn 5 Rotten Flesh into 1 Leather