OpenBSD is a free and open-source Unix-like operating system based on the Berkeley Software Distribution (BSD) family of Unix operating systems. It was created in 1995 by Theo de Raadt and is known for its strong focus on security and code correctness. OpenBSD is known for its proactive security measures, including its use of the OpenSSH protocol for secure remote access and its strict code auditing process. It is also known for its clean and well-documented codebase, which makes it a popular choice for developers and security professionals. OpenBSD is released under the BSD license, which allows for free use, modification, and distribution of the software.
OpenBSD is designed with security in mind and includes many security features such as a secure default configuration, a strong cryptography framework, and a proactive approach to security vulnerabilities. It also includes a number of security-focused tools such as packet filtering, intrusion detection, and network monitoring tools.
OpenBSD is also known for its portability, with support for a wide range of hardware platforms including x86, ARM, MIPS, and SPARC. It also includes a number of software packages and utilities, including a robust set of networking tools, a powerful shell, and a variety of programming languages.
One of the unique features of OpenBSD is its focus on code correctness. The developers of OpenBSD have a strict policy of auditing all code that is included in the operating system, with the goal of identifying and fixing potential security vulnerabilities and bugs. This has led to a reputation for high-quality, reliable code that is less prone to security issues than other operating systems.
Overall, OpenBSD is a powerful and secure operating system that is well-suited for a variety of applications, including servers, desktops, and embedded systems. Its focus on security and code correctness make it a popular choice for security-conscious users and organizations.