Short answer
To install once on Omarchy, open a terminal and run omarchy pkg add once-bin. It is a 5.2 MB download (13.6 MB installed), version 0.3.4-1, licensed MIT. CLI/TUI for installing and managing self-hosted web applications. Free and open source.
Install once on Omarchy
ONCE is a self-hosting platform from 37signals (Basecamp's parent company): a single Go binary that automates installing, updating, backing up, and monitoring Docker-based web applications on your own hardware, from a VPS down to a Raspberry Pi. It ships with 37signals' own apps ready to go but works with any Docker image that serves HTTP on port 80 and exposes a health-check endpoint, and it's driven through both a terminal dashboard and plain CLI commands.
Image loaded from the upstream project · source ↗
- Open a terminal.
- Run the install command:
omarchy pkg add once-bin - Check it landed. Pacman should list version 0.3.4-1:
pacman -Qi once-bin
Open and use once
once has no window of its own: it is a command-line tool, library or system component. To see the commands it added to your PATH:
pacman -Ql once-bin | grep /usr/bin/once requirements and compatibility
- A Docker-capable Linux or macOS machine to host apps on
- Network access for pulling images, updates, and backups
Dependencies Omarchy installs for you
docker
Pricing and license
Free and open source. License: MIT.
Uninstall once
omarchy pkg drop once-binonce package facts
| Package | once-bin |
|---|---|
| Version | 0.3.4-1 |
| Category | Developer Tools |
| License | MIT |
| Download | 5.2 MB |
| Installed size | 13.6 MB |
| Built | 2026-10-08 |
| Pricing | Free and open source |
| Made by | 37signals |
Frequently asked questions
How do I install once on Omarchy?
Open a terminal and run omarchy pkg add once-bin. The download is 5.2 MB and it takes 13.6 MB once installed. Omarchy pulls in any dependencies automatically.
Is once free?
Free and open source. The package is licensed MIT.
How do I uninstall once?
Run omarchy pkg drop once-bin. It removes the package from your system.
What does once depend on?
The package declares 1 dependency: docker. Omarchy installs them for you.
Is once a desktop app?
No. once has no window of its own; it is a command-line tool, library or system component.
Is once in the official Omarchy repo?
Yes. It is published as once-bin (version 0.3.4-1) in the official Omarchy package repository. 37signals makes it. Project site: https://github.com/basecamp/once. This site is unofficial: an independent community project, not affiliated with or endorsed by Omacom or David Heinemeier Hansson. Built with David's blessing.