Fizzy
A kanban tool
Nope!
Not FOSS but there are FOSS related licensing, marketing, or transparency issues.
Details
The project is provided under a non-FOSS “O’Saasy License Agreement”, a license created by the maintainers of the project. The license terms prevent competition with the original authors, therefore limiting use.
The project advertises being “Open Source” on their homepage.
David Heinemeier Hansson, CTO at the project’s owning company, has stated:
Love how calling Fizzy open source is triggering some because our MIT-derived O’Saasy License reserves SaaS monetization rights to us as creators. Same nerds will demoan lack of “sustainable OSS” or argue that handing over all changes under GPL is akshually freedom. Hilarious.
The project is managed by 37signals LLC, and it appears to be funded from their other paid services/products.
Details last reviewed 2026-07-25.
Our reviews are performed manually, without legal expertise, and therefore may be inaccurate or missing detail relevant for your use.
Please don't treat this as legal guidance or assurance of any kind.
Found mistakes or outdated information? Let us know by opening an issue on Codeberg.
Found mistakes or outdated information? Let us know by opening an issue on Codeberg.