DeltaChat / Open Source
Open source under AGPLv3
DeltaChat is developed as self-hosted communication software with a strong emphasis on operator trust, deployability, and practical documentation.
DeltaChat is positioned as infrastructure software you can inspect, deploy, and evaluate in your own environment.
AGPLv3 helps keep the project open while remaining aligned with serious self-hosted use and public-source development.
The goal is not just code availability. The goal is a project that is practical to run, understandable to operators, and documented clearly enough to earn trust in real environments.