Mighty Networks - Mighty Networks enables entrepreneurs, organizations, and companies to create and grow a community-powered brand.
Google Groups - Google Groups allows you to create and participate in online forums and email-based groups with a rich experience for community conversations.
Meta Search - Search your Desktop, Google Drive, Dropbox, Gmail, Evernote.
Galette - Galette is a membership management web application towards non profit organizations.
Community Box - Easily create beautiful directories
Bigtent - BigTent is a web-based organization and communication portal for groups.