ForumFree - ForumFree allows you to create a forum or a blog in a few simple steps.
nodo - Manage your daily tasks in the command line
Proboards - ProBoards is a host of free forums with customer service.
Prompt - Prompt provides fully-integrated writing education solutions, combining instruction, curriculum, and feedback. We support educational institutions, companies, and individuals.
Disciple - Grow, engage and monetise your community with Disciple community software. Get your own branded community platform on Web, iOS and Android
Commandline Challenge - Test your command line skills