I tried searching for Kickstarter alternatives which would be more suitable for funding open source projects.
The main problem with Kickstarter for us is the funding deadlines and more importantly no "sub project" or "sub funding" feature. Say you have a registered project named "Panda3D" and all the features as sub projects or sub funding. That's my idea.
The only close thing I could find is "Gun.io". It has project tags, so we could have "panda3d" as a tag for each feature.
As you see each tag has its own page, so we could link the "panda3d" page from this site.