Battle of the Brands - Compare the online awareness of 2 brands in a battle
AppRecs - AppRecs sorts through reviews in the App Store and automatically helps you filter out inauthentic results.
Retro App Store - How App Store would look like if it was launched in 80s
Fnd - Browse Apple App Store and iTunes on the Web
MacMenuBar - A curated directory of 200+ Mac menu bar apps
Cydia - An alternative app store for jailbroken devices.