Matterbridge is a bridge between a series of chat protocols and offers a REST-API. Supported protocols are among others IRC, XMPP, Gitter, Mattermost, Slack, Discord, Telegram, Rocket.Chat, Hipchat(via xmpp), Matrix, Steam, ssh-chat and Zulip. Minecraft servers are supported with the third party solution MatterLink.
The app provides the official Matterbridge "stable" Docker containers already available from the Docker Hub and apart from that only includes the additional scripting to make it installable and configurable through the Univention App Center. Please refer to the Matterbridge website on where to ask questions and report bugs about Matterbridge itself.