Spacebar sounded really promising when I checked them out years ago.

The big Discord.com features currently left unimplemented or with partial implementations are: Voice/Video support (WebRTC protocol support implemented, but lacking UDP protocol implementation)

Unfortunately, seems like it’s still not at a point where it could cover basic Discord functionality.

Edit: I should be clear, I’m not trying to discourage it. I really hope it succeeds to the goal of parity with Discord! Love to hear from someone who has used it a bit.