Bobby - Keep track of your subscriptions
MemberPrism - open source alternative to memberstack / memberspace , but with both front and backend member-only content protection - easychen/MemberPrism2
TrackMySubs - Subscription tracking and management solution
Fanfix - Exclusive, behind the scenes content from creators
Trim - Manage and cancel your paid subscriptions
Crowdstack Pro - Engage, retain, and grow your community