Version 6.2 - Recommended
Miscellaneous vanilla-esque items.
Combines documentation books from other mods.
Website: http://ae1.ae-mod.info/
Store items as energy patterns in complex computer networks.
Simple library for Vazkii's mods.
Alternative backpack mod.
Allows other mods to add additional inventory slots to a character.
An attempt to make a nicer-to-use builder's wand.
Gather a vast amount of power through utilizing a forbidden material: blood.
Library mod which adds new features and tools into the game for other content creators to work with.
Plant tech nod.
Core mod containing libraries for brandon3055's mods.
Library that provides a more comprehensive RenderBlocks replacement that is also suited for TESR rendering.
Adds a huge variety of decorative blocks to the game.
Adds several chisels, a wrench, and ways to copy designs and store bits.
Provides basic functionality for ChickenBones's mods.
Contains libraries for 3D math and transformations, model rendering, packets, config, colours, asm and a few other things.
Compact solar arrays for IC2.
Continuation of MineTweaker, allows custom recipes and other things.
Allows setting a custom format for the main menu using a JSON file.
Utility mod which adds many new items and blocks which can be useful in a wide range of circumstances.
Power generation mod for Minecraft meant for both early game power as well as high end and more complicated end game power.
Adds a lot of high tier items such as tools and armor, as well as some high tier energy storage.
Rendering library and other shared code for Forge mods, used by Elec332 and others.
Library used by EnderIO, EnderZoo, and many others.
Another tech mod.
Allows players to store stuff in the End.
A series of independent, non-technical, useful in-game items.
Continuation of Big Reactors. Build multiblock machines to produce power.
Speeds up leaf decay to a matter of seconds.
Generates a selection of simple colored blocks, transparent blocks, and glowing blocks for use in building and creative projects.
A few more trees, and lots of bees.
Upon death, leaves a gravestone containing the player's inventory.
The mod that brings the wonder of the Stargate to Minecraft!
Allows modders to easily create in-game documentation.
Realism-inspired technology mod.
Website: http://industrial-craft.net
The original Minecraft tech mod. You probably remember this from Tekkit Classic (1.2.5). Sometimes it's only used for its API, sometimes it's used fully.
Another Starting Inventory mod.
Some simple inventory sorting tweaks.
Like Iron Chests, but for backpacks.
More expensive chests with more space for all your stuff.
Continuation of NEI Addons, primarily for Forestry.
The next big minimap.
Successor to TooManyItems (TMI) and NotEnoughItems (NEI).
Adds JER integration for world resources like ores and mob drops.
Overlays a numerical light level instead of the vanilla color-coded light level.
Descriptive book code and common inventories.
Companion mod required by all mods from McJty.
Alternative to Forge Multipart.
Website: http://www.minecraftforge.net/forum/
The pack's mod API, Forge. (Also used in Tekkit and FTB.)
Miscellaneous files mods added to the folder.
The Morphing Tool can mimic any wrench, screwdriver, hammer or wand made of twigs and petals you throw at it, making it the perfect "omni-wrench" style item.
Adds sleep voting so we don't have to go "zzzzzzzzz".
A library mod for CraftTweaker addons.
Adds various utility wands to Minecraft.
Website: http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/1293018-opencomputers-v1-4-2
An open-source ComputerCraft alternative, this adds programmable computers and robots to the game.
Magical tech spell programming mod.
Improves vanilla gameplay.
Website: http://www.railcraft.info/
Many advanced types of minecart rails to use for transportation.
Adds a pump that pumps liquids in a range.
Simpler mass storage mod (similar to AE1).
Allows users to add their own resources to Minecraft more easily.
Contains various tools that are related to RF or technology in general.
Addon mod for RFTools which adds automation control using a visual grid based programming language.
Adds machines and tools to create dimensions using RF power.
Highly functional, compact, and aesthetic storage solution.
"The Chisels & Bits of redstone circuitry!"
A more immersive version of WAILA.
Put tools together in a variety of ways, then modify them until they're something else. Adds uses for the worldgen provided by Natura.
Airships mod with interactive physics, weaponry, and more.
Shows you the answer to "What Am I Looking At?"
Waila add-on that displays the harvestability of what you're looking at.
Helps provide in game documentation.
Contains code to handle the basic mechanics of the game and Forge.