Fast Downward is a domain-independent classical planning system.

Contact & other Fast Downward resources

• public Discord server: Fast Downward Discord server (for users and non-core developers)
• public mailing list: Google group fast-downward (for users and non-core developers)
• internal mailing list: downward-dev (for internal discussions among the core developers)
• general questions: please write to the public mailing list or ask on the Discord server if at all possible; this helps spread the load on answering questions and makes it possible for others to benefit from the answer
  • in exceptional cases, you can email Malte Helmert, but please note that Malte is overloaded with emails
• issue tracker (for bugs and other issues): http://issues.fast-downward.org
• public Git repository: https://github.com/aibasel/downward

Scientific experiments

We recommend to use the latest release instead of the tip of the main branch. The Downward Lab Python package helps running Fast Downward experiments. Our separate benchmark repository contains a collection of planning tasks.

Contributions

For a brief history of the project and a list of contributors, please see the README file.

License

Fast Downward is licensed under the GNU Public License (GPL), as described in the main repository. If you want to use the planner in any way that is not compatible with the GPL (v3 or newer), you will have to get permission from us.