Introducing Ardia, the open-source Arc
I've been working on this for a few months now. It's feature-complete, already used by a bunch of former Arc users, and extremely performant.
i see what theo was glazing the sidebar a lot tho, this is so addictive, i tried using codex and came back to this cuz the archive feature is bugged, doesnt have snooze and it still shows the old messages, aka same ui bad ux.