Sōzu is an Open Source HTTP Reverse Proxy built in Rust for Always up infrastructures.
This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, version 3.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.

License

Sozu itself is covered by the GNU Affero General Public License (AGPL) version 3.0 and above. Traffic going through Sozu doesn’t consider Clients and Servers as “covered work” hence don’t have to be placed under the same license. A “covered work” in the Licence terms, will consider a service using Sozu’s code, methods or specific algorithms. This service can be a self managed software or an online service. The “covered work” will not consider a specific control plane you could have develop to control or use Sozu. In simple terms, Sozu is a Free and Open Source software you can use for both infrastructure and business but in case of a business based on Sozu (e.g. a Load Balancer product), you should either give back your contributions to the project, or contact Clever Cloud for a specific Business Agreement.