Not only is Zulip the best group chat software I've used (leaves MSTeams far behind, for example), they are now also sponsoring the Latvian OSM community chat hosting!
Zulip is great, check it out for your company: https://zulip.com/ .
And if you have some topic to discuss with the Latvian OSM community, that's welcome here: https://osmlatvija.zulipchat.com
