The facts

A list of all the great things that OpenBSD has. Why this site exists, see About.

• /etc/examples
• 64bit Time
• acme-client(1)
• afterboot(8)
• AnonCVS and open source repos
• Anti-ROP
• arc4random(3)
• ASLR
• Audio recording
• autoinstall(8)
• base system concept
• carp(4)
• Chrooted webserver by default
• Configuration syntax
• cron(8)
• cwm(1)
• Defined integer overflows
• doas(1)
• dump(8): incremental filesystem backups
• Eating your own dogfood
• FFS2: Enhanced Fast Filesystem
• file(1)
• freezero(3)
• Full Disk Encryption
• Hackathons
• httpd(8)
• KARL
• Kernel & Userland
• LibreSSL
• License
• Malloc leak detection
• mandoc(1)
• manpages
• Meltdown & Spectre
• Memory allocation randomization
• mg(1)
• Multiple platforms
• No *-dev packages
• noexec
• nsd(8)
• ntpd(8)
• OpenBGPD
• openrsync
• OpenSMTPD
• OpenSSH
• perl(1)
• pf(4)
• PID randomization
• PIE
• ping(8) randomness
• pledge(2)
• Privilege Separation
• Random MAC addresses in ifconfig(8)
• rcctl(8)
• rdist(1)
• recallocarray(3)
• relayd(8)
• Reliable release model
• Retpoline
• rpki-client(8)
• Sane & secure defaults
• securelevel(7)
• sensorsd(8)
• signify(1)
• slowcgi(8)
• spamd(8)
• Stack
• stack-register checking
• strlcpy(3), strlcat(3)
• Swap Encryption
• Syscall From-Verification
• sysmerge(8)
• syspatch(8)
• sysupgrade(8)
• tmux(1)
• unveil(2)
• unwind(8)
• UTF-8 only
• vmd(8)
• vxlan(4)
• W^X Memory
• WireGuard
• xenodm: the secure X Display manager
• Xserver without root permissions