OPENBSD
The ULTIMATE in SECURITY!
Only two remote holes in the default install, in a heck of a long time!
The ULTIMATE in SECURITY!
Only two remote holes in the default install, in a heck of a long time!
The OpenBSD project produces a FREE, multi-platform 4.4BSD-based UNIX-like operating system. Our efforts emphasize portability, standardization, correctness, proactive security, and integrated cryptography. As an example of the effect OpenBSD has, the popular OpenSSH software comes from OpenBSD!
OpenBSD is freely available from our download sites.
The current release is OpenBSD 7.7, released April 28, 2025. This is the 58th release.
OpenBSD is developed entirely by volunteers. The project's development environment and developer events are funded through contributions collected by The OpenBSD Foundation. Contributions ensure that OpenBSD will remain a vibrant and free operating system.
| Feature | Description | Status |
|---|---|---|
 Security |
Proactive security is our #1 priority! | ROCK SOLID! |
 Portability |
Runs on tons of cool hardware! | GO ANYWHERE! |
 Correctness |
We do it right, the first time! | PERFECTLY! |
 Integrated Crypto |
Encryption built right in! | SUPER SECURE! |
It's FREE! Grab it from our speedy download sites!
| Method | Link |
|---|---|
 Download Sites |
Browse Mirrors |
 Getting Source |
Source Code |
 AnonCVS |
Grab the latest code! |
 CVSWeb |
Browse Source Online |
 GitHub Mirror |
GitHub Mirror |
 Changelog |
Check out the latest changes! |
 FAQ |
Frequently Asked Questions |
| Manual Pages |
RTFM! |
 Patches |
Latest Patches |
 Reporting Problems |
Found a bug? Tell us! |
 Mailing Lists |
Join the Discussion! |
 Songs & Artwork |
Get Your Groove On! |
 Hackathons |
Come Hack With Us! |
 User Groups |
Local OpenBSD Fan Clubs! |
Your contributions keep OpenBSD FREE and SECURE!
 Donations |
Give Us Cash! |
 Merchandise |
Get Your Swag On! |
 OpenBSD Foundation |
Support the Foundation |
 Commercial Support |
Need Professional Help? |
