Comment by dizhn

Zulip is awesome. Super easy to self host. Upgrades go very smoothly. Their thread title concept is great (though they are relaxing its requirement lately). The only thing you don't get if you self host is the mobile notifications. This happened recently and it's a bummer but that's what they came up with to monetize the project, as is their right. Paying $5000 for chat is ridiculous to me when such good alternatives exist.