Quorum

Quorum finds a time that works for a group, and it does it without a database server. Each browser keeps its own copy of the plan, the browsers sync with each other directly, and every change is signed with a key that belongs to the device, so nobody can write in someone else's name.

Someone creates a room, shares the link, everyone marks when they are free, and the best time shows up on a shared grid. Agata designed it and Patryk built it in Nuxt 4 with RxDB and WebRTC, tested with Playwright runs that prove two browsers end up with the same plan.

The full case study is on Patryk's own portfolio.