Patreon - Patreon enables fans to give ongoing support to their favorite creators.
Liberapay - Liberapay is a recurrent donations platform.
Cloud Patron - Open source Patreon alternative
Private Investors - Crowdfunding is new and exciting, but private investment is a tried-and-true option which remains viable as ever.
Kickstarter - Kickstarter is the world's largest funding platform for creative projects. A home for film, music, art, theater, games, comics, design, photography, and more.
TIGSource - Game Development