ForumFree - ForumFree allows you to create a forum or a blog in a few simple steps.

MemberPrism - open source alternative to memberstack / memberspace , but with both front and backend member-only content protection - easychen/MemberPrism2

Proboards - ProBoards is a host of free forums with customer service.

Contentpace - One app to plan, research, brief, optimize & publish better content with AI and workflow automation.

Disciple - Grow, engage and monetise your community with Disciple community software. Get your own branded community platform on Web, iOS and Android

Fanfix - Exclusive, behind the scenes content from creators