Question2Answer - A Q&A site helps an online community to share knowledge.
CSE Classroom Manager - Technology for Education
The Answer Bank - The Answer Bank is the UK’s leading question-and-answer site.
Class Charts - Class Charts is super fast behaviour management software, creating school seating plans in seconds.
Stack Overflow - Community-based Q&A part of the Stack Exchange platform.
NetSupport School - NetSupport School supports a teacher with a wealth of dedicated assessment, monitoring, collaboration and control features.