Patreon - Patreon enables fans to give ongoing support to their favorite creators.
Liberapay - Liberapay is a recurrent donations platform.
Drip by Kickstarter - A new way to back creators. A Patreon competitor.
Tipeee - "Tip" the creators you like.
Open Collective - Recurring funding for groups.
Ko-fi - Ko-fi offers a friendly way for content creators to get paid for their work.