AppRecs - AppRecs sorts through reviews in the App Store and automatically helps you filter out inauthentic results.
PowerSchool - PowerSchool provides a K-12 education technology platform for operations, classroom, student growth, and family engagement.
Cydia - An alternative app store for jailbroken devices.
Clever - syncing between education applications for K-12 schools
Fnd - Browse Apple App Store and iTunes on the Web
Claroline - Claroline is a collaborative eLearning and eWorking platform.