Steam Inventory Helper - Steam Inventory Helper is a free browser extension for Google Chrome that adds a big amount of new features into the Steam trade-offer system & Steam store functionality.
Crossfilter - Fast multidimensional filtering for coordinated views
Augmented Steam - Enhanced Steam fork by IsThereAnyDeal.
Fitic - Fitic is a mobile app that lets you workout with your favorite fitness creators.
Steam Tools Hub - A set of Steam related WebApps built around trading cards, emoticons and backgrounds.
Rounds For Time - Find the best CrossFit gyms near you