http://forums.steampowered.com/forums/showthread.php?t=982685


Features :
- Manage your backpack easily
- View others' people backpacks
- You will not need to wait for an update when valve adds new items
- AutoUpdate (to fix bugs and add new options)
- Easily select and delete duplicates
- Sort backpack by type, class, loadout slot and level (ascending or descending order)

Screenshots :
http://sim.didrole.com/screenshot1.png
http://sim.didrole.com/screenshot2.png
http://sim.didrole.com/screenshot3.png

Website : http://sim.didrole.com/

Download : http://sim.didrole.com/SteamItemManager.rar

Credits :
Valve for the api, AnAkIn for beta testing and for supporting.