You can also try these related scripts:

• Bundle Helper - Add tools for many bundle sites.
• Bundle Helper Reborn - Marks owned/ignored/wishlisted games on several sites, and also adds a button to open the steam page for each game.
• IsThereAnyDeal.com Collection Importer - Adds buttons to various sites to export your game lists to ITAD
• The Redeemer - Pops up the Steam product activation dialog when copying keys from bundle/reseller sites. Supports various bundle organizers and legitimate key resellers.
• Steam Bundle Sites Extension - A steam bundle sites' tool kits.