OpenBSD is a FREE, multi-platform 4.4BSD-based UNIX-like operating system. Our

efforts emphasize portability, standardization, correctness, proactive security

and integrated cryptography.

build-once run-anywhere c library

• UpdatedMay 21, 2025
• C

Mirror ofhttps://gitlab.redox-os.org/redox-os/redox

• UpdatedJul 22, 2025
• Shell

Disk Usage/Free Utility - a better 'df' alternative

• UpdatedJul 30, 2024
• Go

DPI bypass multi platform

• UpdatedJul 8, 2025
• C

Cross-platform lib for process and system monitoring in Python

• UpdatedJul 15, 2025
• Python

htop is an interactive text-mode process viewer for Unix systems. It aims to be a better 'top'.

• UpdatedNov 17, 2020
• C

Read-only git conversion of OpenBSD's official CVS src repository. Pull requests not accepted - send diffs to the tech@ mailing list.

• UpdatedJul 21, 2025
• C

This is the stress-ng upstream project git repository. stress-ng will stress test a computer system in various selectable ways. It was designed to exercise various physical subsystems of a computer as well as the various operating system kernel interfaces.

• UpdatedJul 21, 2025
• C

Arcan - [Display Server, Multimedia Framework, Game Engine] -> "Desktop Engine"

• UpdatedJul 10, 2025
• C

Full-featured, open source mail server solution for mainstream Linux/BSD distributions.

• UpdatedJul 18, 2025
• Shell

All the UNIX and UNIX-Like: Linux, BSD, macOS, Illumos, 9front, and more.

• UpdatedFeb 12, 2025

LibreSSL Portable itself. This includes the build scaffold and compatibility layer that builds portable LibreSSL from the OpenBSD source code. Pull requests or patches sent to tech@openbsd.org are welcome.

• UpdatedJul 7, 2025
• C

GNB is open source de-centralized SDVN to achieve layer3 network via p2p with the ultimate capability of NAT Traversal.GNB是一个开源的去中心化的具有极致内网穿透能力的通过P2P进行三层网络交换的SDVN。

• UpdatedMay 24, 2025
• C

1-click, self-hosted deployment of OpenVPN with DNS ad blocking sinkhole

• UpdatedAug 9, 2020
• Python

The ARP Scanner

• UpdatedMar 8, 2025
• C

UAC is a powerful and extensible incident response tool designed for forensic investigators, security analysts, and IT professionals. It automates the collection of artifacts from a wide range of Unix-like systems, including AIX, ESXi, FreeBSD, Linux, macOS, NetBSD, NetScaler, OpenBSD and Solaris.

• UpdatedJul 19, 2025
• Shell

A sandboxed execution environment for unikernels

• UpdatedJul 17, 2025
• C

Firefox Reader View as a command line tool

• UpdatedMay 11, 2025
• C

OpenBSD Email Service

• UpdatedOct 20, 2019
• Makefile

Qt-based Nintendo Entertaiment System emulator and NSF/NSF2/NSFe Music Player (Linux, FreeBSD, OpenBSD and Windows)

• UpdatedJul 6, 2025
• C