Obsidian
A knowledge management application
Nope!
It's not FOSS, and it doesn't currently claim to be, although it may have been in the past.
Details
While the core project is provided as free-to-use, it is not provided under a FOSS license, nor are original sources made available. Some of the libraries used in/with the project are made available under FOSS licenses.
While the project does publish & distribute releases via GitHub, they do make clear in the repository readme that it does not contains sources for the application.
The project does not appear to market itself as Free Software or Open Source in any way.
The project appears to be funded by selling a range of related services such as syncing, support & web publishing.
Details last reviewed 2026-02-18.
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Found mistakes or outdated information?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Found mistakes or outdated information?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.