tradelink

compare2steam.com is nice to copy a list in and see wich games from that list you own and wich you have in your wishlist

browser addon for steampowered website
http:// enhancedsteam .com

free to play steam games
http://forums.steampowered.com/forums/showthread.php?t=851573

all price regions for all games listed in the search function of steampowered store
http://www . steamprices .com

trading of all kind of steam items
http://www . steamtrades .com
http://www . tf2outpost .com
http://www . steamtradematcher .com

import wishlist and get informed about any discounts and stuff
http://www . isthereanydeal .com

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