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A New Choice in Open Source Licenses: An Analysis of the O’Saasy License

A New Choice in Open Source Licenses: An Analysis of the O’Saasy License

@vikingmute

这几天看推上关于开源的一些事情吵的不可开交

让我想到了 37signals 之前推出的一个协议：O’Saasy License osaasy.dev

非常有趣，你可以随便看代码、改代码、用在商业项目里、自己部署、自托管、甚至卖衍生品都行。

但有一条硬限制：禁止用它或修改版直接跟原作者竞争做 SaaS。不能把它打包成托管服务、云服务去卖给第三方，用户不能拿这个代码去开一个一模一样的付费 SaaS 产品。

这个条款其实非常适合一些基于 SaaS 的产品，觉得MIT/Apache 太无私，容易被大公司或竞争对手拿来主义建 SaaS 赚大钱。Show More

Apr 6, 2026, 1:37 AM View on X

2 Replies

1 Retweets

16 Likes

2,744 Views  Viking @vikingmute

One Sentence Summary

Introducing the O’Saasy License from 37signals, which allows for the free use of open-source code while restricting the creation of directly competing SaaS services.

Summary

In light of recent discussions in the open-source community regarding licensing, the author recommends the O’Saasy License from 37signals. While maintaining open-source transparency, this license adds a core restriction: it prohibits packaging the code as a managed or cloud service to compete directly with the original author. This provides a balanced alternative for SaaS developers, protecting their commercial interests while still contributing to the open-source ecosystem, and avoiding the risk of big companies or competitors simply free-riding on code under MIT/Apache licenses to profit.

AI Score

81

Influence Score 8

Published At Today

Language

Chinese

Tags

OpenSource

O’SaasyLicense

SaaS

Open Source License

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