Single Player Commands for Minecraft 1.5/1.5.1/1.5.2:
http://www.6minecraft.net/single-player-commands-mod
Dragon Mounts Mod for Minecraft 1.4.7/1.5.1:
Dragon Mounts Mod for Minecraft 1.5.1/1.4.7 | 9Minecraft | Minecraft Downloads (Requires Forge)
TooManyItems Mod for Minecraft 1.4.7/1.5.1/1.5.2:
TooManyItems for Minecraft 1.5.2/1.5.1/1.4.7 | 9Minecraft | Minecraft Downloads