TheAppStore.org - Find apps by rating, price, category, updated date and more
Apple App Store - Install apps on your iDevice via the App Store.
Fnd - Browse Apple App Store and iTunes on the Web
AppRecs - AppRecs sorts through reviews in the App Store and automatically helps you filter out inauthentic results.
Magicube - Looking for the best Windows 10 apps? Check out these Universal Apps for PCs and Phones.
GetJar - Discover and play paid apps and games for free.