Lob - A simple API to integrate print & mail solutions into your applications.
PowerSchool - PowerSchool provides a K-12 education technology platform for operations, classroom, student growth, and family engagement.
PostGrid - Transform your Offline Communications. Use our fully-documented REST API to send personalized letters, checks, postcards and improve address accuracy.
Clever - syncing between education applications for K-12 schools
AmazingMail - Business print-mail solution
Claroline - Claroline is a collaborative eLearning and eWorking platform.