Forge Mod loader: http://www.minecraftforge.net/forum/
treecapatator and crystal wing: http://www.minecraftforum.net/topic/1009577-164-daftpvfs-mods-treecapitator-ingameinfo-crystalwing-startinginv-floatingruins/
wildcaves 3:http://www.minecraftforum.net/topic/1554854-16xforge-wildcaves-3-v0433/
Ars Magica 2:http://www.minecraftforum.net/topic/2028696-ars-magica-2-164-version-111c-updated-jan-3/
chocolate quest (AKA better dungeons): http://www.minecraftforum.net/topic/746330-164chocolate-quest-mods-for-the-adventurers/
bibliocraft: http://www.bibliocraftmod.com/
Buildcraft: http://www.mod-buildcraft.com/
Dartcraft: http://www.minecraftforum.net/topic/1686840-164-dartcraft-beta-0215/
Forestry: http://forestry.sengir.net/
IndustrialCraft Experemental build: http://www.industrial-craft.net/
mapwriter: http://www.minecraftforum.net/topic/1570989-164-forge-mapwriter-an-open-source-mini-map/
Mystcraft: http://www.minecraftforum.net/topic/918541-164-mystcraft-01011/
Not Enough Items:http://www.minecraftforum.net/topic/909223-164-smp-chickenbones-mods/
Tinkers construct: http://www.minecraftforum.net/topic/1659892-164tinkers-construct/
ThaumCraft 4: http://www.minecraftforum.net/topic/2011841-thaumcraft-405b-updated-24112013/
treecapatator and crystal wing: http://www.minecraftforum.net/topic/1009577-164-daftpvfs-mods-treecapitator-ingameinfo-crystalwing-startinginv-floatingruins/
wildcaves 3:http://www.minecraftforum.net/topic/1554854-16xforge-wildcaves-3-v0433/
Ars Magica 2:http://www.minecraftforum.net/topic/2028696-ars-magica-2-164-version-111c-updated-jan-3/
chocolate quest (AKA better dungeons): http://www.minecraftforum.net/topic/746330-164chocolate-quest-mods-for-the-adventurers/
bibliocraft: http://www.bibliocraftmod.com/
Buildcraft: http://www.mod-buildcraft.com/
Dartcraft: http://www.minecraftforum.net/topic/1686840-164-dartcraft-beta-0215/
Forestry: http://forestry.sengir.net/
IndustrialCraft Experemental build: http://www.industrial-craft.net/
mapwriter: http://www.minecraftforum.net/topic/1570989-164-forge-mapwriter-an-open-source-mini-map/
Mystcraft: http://www.minecraftforum.net/topic/918541-164-mystcraft-01011/
Not Enough Items:http://www.minecraftforum.net/topic/909223-164-smp-chickenbones-mods/
Tinkers construct: http://www.minecraftforum.net/topic/1659892-164tinkers-construct/
ThaumCraft 4: http://www.minecraftforum.net/topic/2011841-thaumcraft-405b-updated-24112013/