I've used Liberapay to donate to the Matrix.org project[1] for the past few years. It's a bit of a shame that the new Stripe integration is actually a direct bank transfer of your entire donation amount (in other words, recurring donations are actually lump sum donations).

This doesn't make a difference for most projects, but it is something to consider -- though Liberapay has always required a lump sum deposit into their accounts for recurring payments so I guess this is a safer setup.

[1]: https://en.liberapay.com/matrixdotorg/