Irish Luck by MrAmericanMike
Irish Luck mod. You can only get this Mod from Minecraft Forums (http://www.minecraftforum.net/forums) if you got it somewhere else you may want to consider delete it and download from Minecraft Forum.
Iron Chest by cpw
New chests with larger sizes, with in-place upgrade items. The feature chest is the crystal chest, which is transparent - some inventory contents are visible without opening the chest
Iron Dimension by bgwoo (Code and Textures), 7ggw88 (Textures)
3 new dimensions to explore! Iron, Gold and Diamond. New Dimensions, Blocks, Items, Mobs, Tools, Armor and More! Craft a portal lighter, build a portal and light the portal. Time for a journey!
Iron Furnaces by XenoMustache
A mod based off cpw's Iron Chests mod. This mod adds tiers to the already exiting block known as the furnace, with different burn speeds.
The Iron Pressure Plate mod is a mod the adds two pressure plates into the game, A Iron Pressure Plate which only triggers on players and an Advanced Iron Pressure Plate which you can configure yourself. License for usage is included in the jar file