The apps built with GUN are decentralized (thus "dApp", the browser can even store/serve data), however browsers still suck with WebRTC, so there are fallbacks to WebSocket and stuff, but the dApps do not require/depend upon a daemon/central host.

Hey, your Odoo apps look pretty neat. I'd love to learn more about how you've managed to make a business on top of OSS, wanna chat? Check my profile for my email. :)