OpenBSD is a free, multi-platform, UNIX-like operating system based on 4.4BSD. The project emphasises portability, standards compliance, correctness and proactive security, and it includes built-in cryptography. Development is carried out entirely by volunteers. The system is installed and operated on the user's own hardware.
The OpenBSD Foundation is a Canadian not-for-profit corporation that supports OpenBSD and related projects such as OpenSSH, LibreSSL and mandoc. The foundation funds development infrastructure and developer events through donations. The project website describes development as entirely volunteer-driven and names no commercial owner. Most of the source code is published under the ISC licence, with a few older GPL components remaining in the base system. A European organisation can therefore review, modify and maintain the code on its own infrastructure. The website describes no cloud service in which customer data is stored.