Lethean is an open source, blockchain-backed P2P VPN. That’s quite the string of acronyms. Basically, it allows anyone to be a “provider” and set up an exit node on the internet. Other users can then discover that node and use cryptocurrency to pay the provider for their service.
I’m part of an international team of developers working on the technology and it’s really exciting stuff!
You can find out much more information on the project’s page directly: https://lethean.io