ONCE is a platform for installing and managing Docker-based web applications. Its goal is to make self-hosting applications as simple as possible.

As well as simplifying the initial setup, ONCE also provides automatic updates, backups, and system information. It has a TUI interface with a dashboard for monitoring and operating your applications, as well as CLI commands for common operations should you (or your AI agent) prefer that.

ONCE runs on Linux and macOS, and can be used to run applications on a variety of hardware: a physical server, a cloud VPS, a Raspberry Pi, or your laptop, are all suitable.