Patreon - Patreon enables fans to give ongoing support to their favorite creators.
WildApricot - WildApricot is a powerful cloud software to help you automate and simplify membership tasks.
Liberapay - Liberapay is a recurrent donations platform.
Silkstart - SilkStart’s Association Management System streamlines your operations through one central database...
Tipeee - "Tip" the creators you like.
Sheep - Membership and events for SMEs and nonprofits