OpenBSD is a useful operating system that can run on various hardware platforms. Many security professionals consider it the most secure UNIX-like operating system due to its comprehensive source code audit that never ends. OpenBSD is a feature-rich UNIX-like operating system available for free in source and binary form. It also integrates advanced security technology suitable for creating firewalls and private network services in a distributed environment.

OpenBSD enjoys strong and continuous development in several areas, allowing developers and end-users to work with emerging technologies. Additionally, an international community of developers and end-users contributes to its development. OpenBSD aims to minimize the need for customization and tweaking, making it easy for most users to use it on their hardware for their applications.

OpenBSD project maintains portable versions of many subsystems as packages for other operating systems. The project's preferred BSD license enables the reusing of many components in proprietary and corporate-sponsored software projects. For instance, the firewall code in Apple's macOS is based on OpenBSD's PF firewall code, Android's Bionic C standard library is based on OpenBSD code, LLVM uses OpenBSD's regular expression library, and Windows 10 uses OpenSSH (OpenBSD Secure Shell) with LibreSSL.

The term 'open' in OpenBSD refers to the system's source code availability on the internet and the wide range of hardware platforms it supports. On the other hand, the term 'open' in OpenSSH solely refers to OpenBSD.

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