PowerSchool - PowerSchool provides a K-12 education technology platform for operations, classroom, student growth, and family engagement.
Overleaf - The online platform for scientific writing. Overleaf is free: start writing now with one click. No sign-up required. Great on your iPad.
Teachable - Create and sell beautiful online courses with the platform used by the best online entrepreneurs to sell $100m+ to over 4 million students worldwide.
TeXworks - The TeXworks project is an effort to build a simple TeX front-end program (working environment)...
Clever - syncing between education applications for K-12 schools
TeXstudio - TeXstudio is an integrated environment for writing LaTeX documents.