https://www.bountysource.com/ wants 10% on cashout, which sounds like a reasonable fee of operation. I have no problem with people making a living of that. OSS is no charity.

Well, there's Gratipay (formerly Gittip), which is a great platform since it allows you to support an open-source project through regular payments. Unfortunately, the project has not yet received broad adoption, which I hope will change in the future, though.

Here's the link:

http://www.gratipay.com

In fact, there is a page for the Tor community, so if you want to support them, go there and give them some money ;)

https://gratipay.com/for/tor

I know it's common here to let the past be past, but it should be said that depending on your world view, gittip is not a good option.

http://geekfeminism.wikia.com/wiki/Gittip_crisis

It's all well and good to build one, but this project didn't get 600K because it's a good idea - it got it because it hit the right buttons on the largest by far crowdfunding website around.

If it's not permitted on Kickstarter, we would probably do better to convince them to allow it, with certain restrictions of course. A purpose-built site simply wouldn't have the traffic to produce that kind of funding for smaller projects.