
InGame Info XML by Lunatrius
Display extra information on top of your ingame screen.
opensource clientside HUD

IngameInfo by bspkrs
Want to know how much score you have without having to die? In need of real time information like weather, light level or your world size as you explore? Then this mod is for you!
clientside HUD opensource

Inventory Tweaks by Jimeo Wan, Kobata
Tweaks to inventory handling for ease of use, including sorting and automatic replacement of broken tools or exhausted stacks of items.
util opensource

JuiceWares by JuiceGrape
A random collection of fun little changes, blocks and items to help me learn modding.
opensource mobs enchanting tools

Just Another Spawner
Just Another Spawner (JAS) is a Minecraft Mod aimed at providing an alternative entity spawning system for Minecraft.
opensource

Logical Engineering by briman0094
Powerful yet easy-to-use tech mod to enhance your Minecraft Experience
tech opensource tools transport ores productivity

Logistics Pipes by davboecki, AartBluestoke, ArtForz, GUIpsp, theZorro266
Logistics Pipes is an extensive overhaul of the Buildcraft pipe system. It allows for better distribution of items via pipes, more organised stockkeeping and easier automated crafting.
opensource tech

Minecraft Forge by LexManos, Eloraam, Spacetoad
Minecraft Forge is a common open source API allowing a broad range of mods to work cooperatively together. It allows many mods to be created without them editing the main Minecraft code.
library opensource

Multishot by masa
Automatic screenshots and motion for timelapses or other stuff
recording timelapse opensource

NEI Addons by bdew
opensource util

OpenBlocks by boq, Mikee
All the things you never thought you will ever need...
opensource random enchanting

OpenPeripheralCore by Mikee, boq, theoriginalbit, foone
Converts many blocks into ComputerCraft peripherals!
computers addon opensource

Pet Bat by AtomicStryker
PetBat mod allows you to tame a bat that will accompany you and help you fighting mobs.
mobs survival opensource

Player Beacons by Kihira, Nexans20
Tap into the power of the end to enhance yourself
magic opensource

PluginsforForestry by denoflionsx
opensource addon

Random Things by Lumien
This mod does what it says...adds random things to minecraft!
random util opensource