Dovel

Knowledge-based community software. You can use it to quickly build your Q&A community for product technical support, customer support, user communication, and more.

Realtime server for reliable two-way communication over WebSockets, Server-sent events, etc.

Comment system built in Golang, providing a lightweight and highly customizable solution for adding comments to your website.

Supports real-time sharing of audio, video, slides (with whiteboard controls), chat, and the screen. Instructors can engage remote students with polling, emojis, and breakout rooms.

Language-agnostic real-time messaging (Websocket or SockJS) server.

SMTP (email) server with a focus on simplicity, security, and ease of operation.