Minecraft Forge (API) for Minecraft 1.7.10, 1.7.9 and 1.6.4 is an open-source tool or a modification layer which provides modding capabilities to developers and players.
OptiFine HD for Minecraft 1.7.10 is a performance enhancement modification which doubles the FPS (frames per second) rate inside your world.
Pixelmon for Minecraft 1.7.10/1.7.2 is a modification for Minecraft inspired from a Anime series ‘Pokemon’.
Zan’s Minimap (also known as VoxelMap) is a modification for Minecraft 1.7.10, 1.7.2 and 1.6.4 that adds a fully functional minimap (like the ones in WoW, Guildwars) on the right corner of your screen.
GLSL Shaders is a modification for Minecraft 1.7.10/1.7.2/1.6.4 that brings OpenGL based Shader graphics in your Minecraft world and make it look fabulous.
MCPatcher HD Fix is a powerful java-based appplication for Minecraft which allows you to switch between mods and texture packs in Minecraft without closing the game.
XRay Mod (with fly) is a modification for Minecraft 1.7.10 which enables X-Ray vision in your world seed. It enhances your mining experience by a great margin and allows you to find desired blocks easily with less effort.
Marglyph’s TooManyItems (TMI) for Minecraft 1.7.10 is a must-have modification which allows player to gain any in-game item right inside your inventory by using your resources in backpack.
Forge ModLoader is a modification that provides extensive modding capabilities in Minecraft 1.7.2.
Sonic Ether’s Unbelievable Shaders 1.7.9/1.6.4 (or SEUS) is a graphics enhancement mod for Minecraft that transforms your in-game world into a realistic and beautiful environment