tionis·5개월 전·discussFluffychat does and I would argue is one of the big ones. Its however quite mobile optimized (basically more like WhatsApp, less like slack).
meet.hn/city/de-Passau Socials: - github.com/tionis
[ my public key: https://keybase.io/tionis; my proof: https://keybase.io/tionis/sigs/cXnfY1SCf-QDXDzHNYFrMS4PmGOG4Q22QTpsDssTuBk ]