OpenBSD has a reputation for being more secure than Linux, because OpenBSD's developers put significant effort into security research and secure coding practice

OpenBSD has a reputation for being more secure than Linux, because OpenBSD's developers put significant effort into security research and secure coding practices. People who expand this to other BSDs are mistaken. FreeBSD is a good general-purpose OS competing in the same space as Linux, and NetBSD will probably run on your toaster.