Privacy Gateway: a privacy preserving proxy built on Internet standards
blog.cloudflare.com/building-privacy-into-internet-standards-and-how-to-make-your-app-more-private-today
What Jamie wrote
Cloudflare continues to impress with their work on very foundational capabilities, now with a Privacy solution.
The main innovation in the Oblivious HTTP standard – beyond a basic proxy service – is that these messages are encrypted to the application’s server, such that Privacy Gateway learns nothing of the application data beyond the source and destination of each message.
I don't know enough about networks like Tor, but there seem to be some similar concepts here.