Been living off grants and donations for a few years now. My 2c is you probably don't need to invent a new platform to fund open source development. There are tons of platforms and systems in place already. That's not's what's missing. You need to get open source developers that want to get paid for their work to spell that fact out to their users and supporters.

Yes this is uncomfortable, but the simple fact is that if you don't tell anyone you want to get paid, you probably won't be given any money. Standard seem to be maybe there's a donation link somewhere on the site, buried 4 clicks deep in the FAQ, more often than not something like a paypal.

The reality is that if you do ask for money, surprisingly often people will straight up just give you money if they like what you're doing. Like people get paid real money for screaming at video games on Twitch, meanwhile you're building something people find useful. Of course you can make money off it. But you gotta ask for it, the game screamers on twitch sure do. That's the secret. Sure there's a scale from asking for donations and doing a Jimmy Wales and putting a your face on a banner begging for donations; and while going full jimbo is arguably taking it too far, it's also probably closer to the optimum than you'd imagine.

If you have corporate users, word on the street is you can also just reach out to them and ask for sponsorship. They're not guaranteed to say yes, but they're extremely unlike to sponsor you spontaneously.