is it really FOSS?

Pi-hole

DNS based ad-blocker

Yes!
This project appears to be free and open source software.

Details

The project is provided under a mix of EUROPEAN UNION PUBLIC LICENCE code and GPLv2 which was used before the license changed in 2017. From what can be understood, the collective result when distributed is effectively under the terms of the GPLv2 license.

The project appears to gain revenue from donations and from selling branded projects in a shop.

Details last reviewed 2025-06-14. Mistakes or outdated information? Let us know by opening an issue on Codeberg.