Vanilla Forums - Build an engaging community forum using Vanilla's modern cloud forum software.
Google Groups - Google Groups allows you to create and participate in online forums and email-based groups with a rich experience for community conversations.
Forumbee - Forumbee offers community forums for discussions, feedback and Q&A.
Galette - Galette is a membership management web application towards non profit organizations.
Discourse - Discourse is an open source discussion platform built for the next decade of the Internet.
Bigtent - BigTent is a web-based organization and communication portal for groups.