WoW Informant has had a revamp! It is now mobile and tablet friendly. Guides are being updated to level 700 (Warlords of Draenor) and should be with you soon!
Achievement Buddy allows you to search for guild members that need to do the same achievements. You can use this tool if you are short on things to do and want an easy way to source a group.
Not at an auction house? Get prices for the items you need to buy or sell without having to an auction house.
Character Profiler allows you to see your characters equipment, stats, builds and talents. You can optionally compare your character with another player to see how you compare!