Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
PowerSchool - PowerSchool provides a K-12 education technology platform for operations, classroom, student growth, and family engagement.
Diigo - Diigo is a powerful research tool and a knowledge-sharing community
Clever - syncing between education applications for K-12 schools
Weava - Workspace to highlight, organize & collaborate on your research articles.
Claroline - Claroline is a collaborative eLearning and eWorking platform.