OpenBSD is a free and open-source Unix-like operating system known for its strong focus on security, code simplicity, and correctness. Founded in 1995 by Theo de Raadt, it is part of the BSD family of operating systems, which originated from the Berkeley Software Distribution (BSD). OpenBSD emphasizes secure computing and is widely recognized in the security and networking communities. Key features of OpenBSD include OpenSSH, a secure shell protocol for remote access, and PF (Packet Filter), a powerful firewall tool. The operating system also provides robust cryptographic libraries and tools, making it suitable for applications that require secure communications. OpenBSD is commonly used in environments where security is critical, such as firewalls, secure servers, and cryptographic applications. Its clean and well-documented codebase is also favored for security research and development projects.
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Columns5| Company | Markets | New markets | Momentum | Activity | Expansion score |
|---|---|---|---|---|---|
 OpenBSDYou | 0 | 0 | — | 0 | 0 |
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OpenBSD 7.1 now supports Apple M1 hardware, including M1 Ultra. The port was aided by the Asahi Linux project's UEFI installer.
A guide for setting up a personal mail server on OpenBSD, covering OS, SMTP, IMAP, DKIM, and spam filtering configuration.
MinC is a Unix emulator for Windows based on OpenBSD, designed for vocational education. It offers Unix commands, networking tools, and development environments.
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