ONCE (Again)
TL;DR · AI 摘要
DHH 宣布 ONCE 项目转型，从一次性付费自托管模式转向开源，并推出同名应用服务器平台。该平台支持单机一键部署多款开源应用及 AI 生成应用，提供终端监控、零停机升级与自动备份，旨在大幅降低自托管运维门槛。
核心要点
- ONCE 商业模式转型：一次性付费自托管模式未获市场认可，现已全面转向开源免费。
- 推出统一应用服务器：新 ONCE 平台支持单机集中运行多款应用，替代原独立 VM 部署方案。
- 内置运维能力：提供终端指标监控、零停机升级与定时备份，简化自托管基础设施管理。
March 16, 2026
The original concept for ONCE sought to sell self-hostable web apps for a one-time fee. That didn't work. Sure, we recouped the investment on Campfire, our chat app, but that was it. You gotta listen when the market tells you what it wants! And it didn't seem to want to pay for self-hosted web apps in a one-off way.
So we set Campfire, Writebook, and now Fizzy free by releasing them all as open source with a permissive license. That worked! Tons of people have been running these apps on their own servers, contributing code back, and learning how we build real production applications at 37signals.
Now we're doubling down on the gift and adding an integrated way to run all these apps, and your own vibe-coded adventures too, on a brand-new application server we're also calling ONCE.
If you twist my arm, I can make that spell "Open Network Container Executor", but we don't even have to go there. Once is just a cool word, we already own the domain, and it's running all the original applications released under that banner as free and open-source installations. That's good enough!
The pitch here is that installing a whole suite of applications on your own server should be dead easy. The original ONCE model wanted a dedicated box or VM per app, which was just cumbersome and costly to maintain. Now you can use a single machine — even your laptop! — to run everything all at once.
ONCE gives you a beautiful terminal interface to track application metrics, like RAM + CPU usage, as well as basic visitor + request/second counts. It also gives you zero-downtime upgrades and scheduled backups. It's meant to be able to run all the infrastructure apps you'd need, like our full suite and all the ones your AI agents will soon be building for you.
About David Heinemeier Hansson