Gmail Unsubscriber - Open source alternative to Unroll.me for Gmail
PowerSchool - PowerSchool provides a K-12 education technology platform for operations, classroom, student growth, and family engagement.
Trimbox - One-click unsubscribe for mailing lists, straight from Gmail
Clever - syncing between education applications for K-12 schools
Leave Me Alone - Easily unsubscribe from unwanted emails 💌
Claroline - Claroline is a collaborative eLearning and eWorking platform.