We've been using Discord at my company. Granted we're in gaming and it's very gamer-oriented, but it fits really well. And it doesn't have threaded messaging :)
Discord is by far and away the best Electron app I have ever used. I don't know what their secret sauce is, but it's the first time I haven't run back into the arms of a functionally-inferior competitor product written in literally anything else. It's responsive to input at all times, doesn't eat all of the RAM in sight, and doesn't consume unnecessarily large amounts of CPU cycles.
VS Code is second best and somehow manages to best Atom in every way, but is still painfully sluggish at times (on a i7 6500u, no less) and isn't exactly RAM friendly.
Slack desktop is basically a dumpster fire, and from what I can tell Slack's attempt at mitigating that are to piss on it.
VS Code is second best and somehow manages to best Atom in every way, but is still painfully sluggish at times (on a i7 6500u, no less) and isn't exactly RAM friendly.
Slack desktop is basically a dumpster fire, and from what I can tell Slack's attempt at mitigating that are to piss on it.