From this week's ADMIN Update newsletter: Andreas Stolzenberger looks at self-hosted chat servers Zulip, Mattermost, and Rocket.Chat
https://www.admin-magazine.com/Archive/2025/86/Zulip-Mattermost-and-Rocket.Chat?utm_source=mlm
#ChatServer #security #Zulip #Mattermost #RocketChat #OpenSource