Overleaf - The online platform for scientific writing. Overleaf is free: start writing now with one click. No sign-up required. Great on your iPad.
PowerSchool - PowerSchool provides a K-12 education technology platform for operations, classroom, student growth, and family engagement.
TeXstudio - TeXstudio is an integrated environment for writing LaTeX documents.
Clever - syncing between education applications for K-12 schools
LyX - LyX is a document processor.
Claroline - Claroline is a collaborative eLearning and eWorking platform.