I’m not sure if what I’m looking for exists, or if it’s even possible to build.
I would like to have a central place where I can donate some monthly amount. I set up my profile and say, from my monthly donation, I want x percent to go to this project, y percent to that project, and so on. So instead of setting up some number of donations for all the projects I use and want to support, I have a single donation to support multiple projects.
Is there already a platform like this?
The platform that works closest to this is https://www.liberapay.com/
It used to allow making 1 monthly payment and spreading it between projects. But they had to change to comply with banking/payment platform rules so each money transfer is directed to one beneficiary from the get go. Meaning you setup a recurring payment per project.
There’s also the nlnet foundation https://nlnet.nl/
It’s possible to give them 1 recurring payment to support OSS projects. But they manage how the money is split between projects and their own overhead. You don’t pick the projects.