Mendeley - Easily organize your papers, read & annotate your PDFs, collaborate in private or open groups, and securely access your research from everywhere.
PowerSchool - PowerSchool provides a K-12 education technology platform for operations, classroom, student growth, and family engagement.
Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
Clever - syncing between education applications for K-12 schools
Qiqqa - Qiqqa is a free research and reference management software. It can be used in many organizational projects from the academic to the personal to the business endeavor. Read more about Qiqqa.
Claroline - Claroline is a collaborative eLearning and eWorking platform.