Remind - Remind, formerly Remind101, is a communication tool that helps teachers reach students and parents where they are. It also allows for translation features to better communicate with all families.
Stack Overflow - Community-based Q&A part of the Stack Exchange platform.
Edmodo - Where Learning Happens
The Answer Bank - The Answer Bank is the UK’s leading question-and-answer site.
ClassDojo - Build wonderful classroom communities with parents and students. Class DojoBuild wonderful classroom communities with parents and .
Askalot - Askalot is a next generation CQA (Community Question and Answer) system.