Browse free open source Operating Systems and projects below. Use the toggles on the left to filter open source Operating Systems by OS, license, language, programming language, and project status.

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  • 1

    Antivirus Live CD

    4MLinux fork including ClamAV scanner

    Antivirus Live CD is an official 4MLinux fork including the ClamAV scanner. It's designed for users who need a lightweight live CD, which will help them to protect their computers against viruses. Ethernet, WiFi, PPP and PPPoE are supported by Antivirus Live CD to enable automatic updates of its virus signature databases. All partitions are mounted during the boot process so that they can be scanned by ClamAV. The Antivirus Live CD ISO images are fully compatible with UNetbootin, which can be used to create an easy-to-use Antivirus Live USB.
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    Downloads: 421 This Week
    Last Update:
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  • 2
    Network Security Toolkit (NST)

    Network Security Toolkit (NST)

    A network security analysis and monitoring toolkit Linux distribution.

    Network Security Toolkit (NST) is a bootable ISO image (Live USB Flash Drive) based on Fedora 42 providing easy access to best-of-breed Open Source Network Security Applications and should run on most x86_64 systems. The main intent of developing this toolkit was to provide the security professional and network administrator with a comprehensive set of Open Source Network Security Tools. The majority of tools published in the article: Top 125 Security Tools by INSECURE.ORG are available in the toolkit. An advanced Web User Interface (WUI) is provided for system/network administration, navigation, automation, network monitoring, host geolocation, network analysis and configuration of many network and security applications found within the NST distribution. In the virtual world, NST can be used as a network security analysis, validation and monitoring tool on enterprise virtual servers hosting virtual machines.
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    Downloads: 225 This Week
    Last Update:
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  • 3
    Parrot Project

    Parrot Project

    Security, Development and Privacy Defense, all in one place.

    Parrot is a cloud friendly operating system designed for Pentesting, Computer Forensic, Reverse engineering, Hacking, Cloud pentesting, privacy/anonimity and cryptography. Based on Debian and developed by Frozenbox network.
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    Downloads: 189 This Week
    Last Update:
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  • 4
    IPCop Firewall

    IPCop Firewall

    Linux firewall distribution geared towards home and SOHO users.

    The IPCop Firewall is a Linux firewall distribution. It is geared towards home and SOHO users. The IPCop web-interface is very user-friendly and makes usage easy.
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    Downloads: 100 This Week
    Last Update:
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  • Find Hidden Risks in Windows Task Scheduler Icon
    Find Hidden Risks in Windows Task Scheduler

    Free diagnostic script reveals configuration issues, error patterns, and security risks. Instant HTML report.

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  • 5
    Xiaopan OS

    Xiaopan OS

    Easy to use pentesting distribution for wireless security enthusiasts

    Xiaopan OS is an easy to use software package for beginners and experts that includes a number of advanced hacking tools to penetrate WPA / WPA2 / WPS / WEP wireless networks. Based on the Tiny Core Linux (TCL) operating system (OS), it has a slick graphical user interface (GUI) requiring no need for typing Linux commands. Xiaopan OS is Windows, Mac and Linux compatible and users can simply install and boot this ~70mb OS through a USB pen drive or in a virtual machine (VM) environment. Some of the tools included are Inflator, Aircrack-ng, Minidwep GTK, XFE, wifite and feeding bottle. Supported cards include RTL8187L, RT3070, AR9271 and many more.
    Downloads: 115 This Week
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  • 6
    Robolinux

    Robolinux

    Announcing Robolinux Cinnamon 14.1

    Announcing The New Robolinux Series 14 Mate LTS - 2034 Robolinux is very pleased to announce a completely new 14.1 Mate privacy centered 1inux operating system you can download freely while also offering our users an optional 14+ advanced upgrade which comes with our Untracker and FAAST Boot along with one click popular privacy software installers like Tor and I2p, Wireshark and Bleachbit plus many more for a fair and reasonable price. Robolinux14.1-Mate is ideal for beginners and advanced users. We are proud that it comes with Enoch AI which is TOTALLY 100% PRIVATE, FREE, HONEST & UNCENSORED built into Robolinux Cinnamon 14.1 The Robolinux 14.1 version with rock solid Long Term Support through 2034! requires users to set secure boot in their BIOS. It is currently available in the Cinnamon desktop flavor. we will release series 14 Xfce version in the next two months.For more information please see Readme file. Warmest regards John Martinson Robolinux.org
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    Downloads: 101 This Week
    Last Update:
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  • 7
    Endian Firewall Community
    Endian Firewall Community (EFW) is a "turn-key" linux security distribution that makes your system a full featured security appliance with Unified Threat Management (UTM) functionalities. The software has been designed for the best usability: very easy to install, use and manage and still greatly flexible. The feature suite includes stateful packet inspection firewall, application-level proxies for various protocols (HTTP, FTP, POP3, SMTP) with antivirus support, virus and spam-filtering for email traffic (POP and SMTP), content filtering of Web traffic and a "hassle free" VPN solution (based on both OpenVPN and IPsec).
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    Downloads: 372 This Week
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  • 8
    AlienVault OSSIM

    AlienVault OSSIM

    Open Source SIEM

    OSSIM, AlienVault’s Open Source Security Information and Event Management (SIEM) product, provides event collection, normalization and correlation. For more advanced functionality, AlienVault Unified Security Management (USM) builds on OSSIM with these additional capabilities: * Log management * Advanced threat detection with a continuously updated library of pre-built correlation rules * Actionable threat intelligence updates from AlienVault Labs Security Research Team * Rich analytics dashboards and data visualization
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    Downloads: 77 This Week
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  • 9
    <<Hack|Track GNU/Linux

    <<Hack|Track GNU/Linux

    Distro Penetrasing Live System Burn to USB Flash Disk & Run.

    <<Hack|Track GNU/Linux is an open source operating system developed by the HTGL Project from Indonesia which provides penetration testing.
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    Downloads: 132 This Week
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  • AI-generated apps that pass security review Icon
    AI-generated apps that pass security review

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    Retool lets you generate dashboards, admin panels, and workflows directly on your data. Type something like “Build me a revenue dashboard on my Stripe data” and get a working app with security, permissions, and compliance built in from day one. Whether on our cloud or self-hosted, create the internal software your team needs without compromising enterprise standards or control.
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  • 10
    BerserkArch

    BerserkArch

    A bleeding-edge, security-centric Arch-based Linux distribution.

    BerserkArch is a security-focused, performance-tuned Linux operating system (OS) based on Arch Linux, designed for developers, hackers, and technical users. A bleeding-edge, security-centric Arch-based Linux distribution crafted for hackers, developers, and nerds alike. Following the Arch Linux philosophy, it is designed to be highly customizable, allowing users to build their environment with only the components they need, rather than having a lot of pre-installed software like some other security distributions (e.g., Kali Linux). As an Arch-based distribution, it benefits from the rolling release model, providing users with the latest software versions and kernel updates. BerserkArch is a dist "designed to make you powerful" for specific use cases like reverse-engineering binaries and automating exploits, rather than being an easy-to-use distribution for general beginners.
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    Downloads: 197 This Week
    Last Update:
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  • 11
    TinyPaw-Linux

    TinyPaw-Linux

    Passive & Aggressive WiFi attack distro

    Linux WiFi pentesting distribution built off Tiny Core Linux and inspired by the Xiaopan OS project. Lightweight with some new tools and updates to tools that have stood the test of time. Unfortunately at this time the TinyPaw-Linux project has been retired. This SourceForge will remain up, thank you for all the support and communities this project drew inspiration from.
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    Downloads: 63 This Week
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  • 12
    Matriux
    Matriux is a GNU/Linux, Debian based security distribution designed for penetration testing and cyber forensic investigations. It is a distribution designed for security enthusiasts and professionals, can also be used normally as your default OS.
    Downloads: 28 This Week
    Last Update:
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  • 13
    Moved to GitHub! This project has moved to https://github.com/SamuraiWTF/samuraiwtf
    Downloads: 36 This Week
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  • 14
    DracOS GNU/Linux Remastered
    What is DracOS GNU/Linux Remastered ? DracOS GNU/Linux Remastered ( https://github.com/dracos-linux ) is the Linux operating system from Indonesia , open source is built based on Debian live project under the protection of the GNU General Public License v3.0. This operating system is one variant of Linux distributions, which is used to perform security testing (penetration testing). Dracos linux in Arm by hundreds hydraulic pentest, forensics and reverse engineering. Use a GUI-based tools-tools the software using the CLI (command line interface) and GUI (graphical user interface) to perform its operations. Now Dracos currently already up to version 3.1.5 with the code name "KUNTILANAK WITH REMASTERED".
    Downloads: 33 This Week
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  • 15
    Sn3rpOs_v7.21: CoNt4g1N

    Sn3rpOs_v7.21: CoNt4g1N

    TinFoilSec Presents: Sn3rpOs_v7.21 (CoNt4g1N)

    *Updated 11/05/2021 TinfoilSec Presents: Sn3rpOs [Codename: CoNt4g1N] Features: Xfce4 Desktop Kali Linux Full System Torified with Privoxy & Tor bleachbit Wire Signal Veracrypt All repos transported through Privoxy&Tor dnscrypt-proxy (no-logs) Tor Browser Custom Tor Switcher and Pyloris Firefox-esr (configured with tor) Thunderbird ProtonVPN (Free VPN no-logs) Sn1per Vault Scanner RED_HAWK Fork of Kali Rolling, Debian Stretch/Buster -No Back Doors- Now with UEFI boot support and of course bacon. XD login: tfs passwd: toor As Always RTFM! (README file)
    Downloads: 17 This Week
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  • 16
    HoneyDrive

    HoneyDrive

    Honeypots in a box! HoneyDrive is the premier honeypot bundle distro.

    HoneyDrive is the premier honeypot Linux distro. It is a virtual appliance (OVA) with Xubuntu Desktop 12.04.4 LTS edition installed. It contains over 10 pre-installed and pre-configured honeypot software packages such as Kippo SSH honeypot, Dionaea and Amun malware honeypots, Honeyd low-interaction honeypot, Glastopf web honeypot and Wordpot, Conpot SCADA/ICS honeypot, Thug and PhoneyC honeyclients and more. Additionally it includes many useful pre-configured scripts and utilities to analyze, visualize and process the data it can capture, such as Kippo-Graph, Honeyd-Viz, DionaeaFR, an ELK stack and much more. Lastly, almost 90 well-known malware analysis, forensics and network monitoring related tools are also present in the distribution.
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    Downloads: 12 This Week
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  • 17
    Liberté Linux

    Liberté Linux

    Liberté Linux: Mission-critical stealth communication

    Liberté Linux is a secure, lightweight, and easy to use Gentoo-based Linux distribution intended as a communication aid in hostile environments. Liberté installs on a USB key, and boots on any computer or laptop.
    Downloads: 7 This Week
    Last Update:
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  • 18
    Kali Linux Polish Edition

    Kali Linux Polish Edition

    Polish version of Kali LINUX

    Polish version of Kali LINUX pentesting linux distro
    Downloads: 11 This Week
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  • 19
    blackhat-global

    blackhat-global

    Blackhat-Global-Lite OS Debian Buster based custom distro

    We are excited to announce the availability of Blackhat-Global OS Lite. We’ve condensed the full Blackhat-Global experience into a streamlined operating system that’s fast, user-friendly, desktop-oriented operating system based. Which is available immediately for download. Blackhat-Global Lite is a Debian (Buster) customized Linux-based distribution, built for Penetration Testers. The solution we’ve committed to is lightweight that provides users a perfect blend of power condensed into Blackhat-Global OS Lite without sacrificing our product's functionality. Blackhat-Global OS Lite is offered as XFCE4 desktop edition tailored to address the needs of a variety of pentesters users with more than 2000 penetration testing tools. Blackhat-Global OS Lite can be installed permanently as a robust and fully configurable operating system on a laptop or desktop system, or it can be run effectively as a live installer and supports the addition of persistent storage for thos
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    Downloads: 25 This Week
    Last Update:
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  • 20
    Netdeep Secure Firewall

    Netdeep Secure Firewall

    Next Generation Open Source Firewall

    Netdeep Secure is a Linux distribution with focus on network security. Is a Next Generation Open Source Firewall, which provides virtually all perimeter security features that your company may need. It offers Web content filters, ensuring better performance of the network, allowing users to use the service efficiently and securely, providing a deep control of the use of the Web access service, blocking access to unwanted websites, Virus, Spam, Applications and intrusion attempts. Its configuration is made entirely by the web interface.
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    Downloads: 12 This Week
    Last Update:
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  • 21
    Katana : Multi-Boot Security Suite
    Katana packages security / ethical hacking distributions (like Backtrack, Ophcrack, & UBCD) together with portable Windows applications (like Metasploit, NMAP, Cain & Able, & Wireshark) to run off a single USB flash drive.
    Downloads: 3 This Week
    Last Update:
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  • 22
    HackShark Linux

    HackShark Linux

    Lightweight Linux distro for penetration testing

    Based on MATE environment HackShark Linux is a lightweight distribution for penetration testing, cyber forensic investigation and vulnerability assessment purpose.
    Downloads: 12 This Week
    Last Update:
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  • 23
    MalbianLinux

    MalbianLinux

    GNU/Linux Distribution for Malware Analysis and Reverse Engineering.

    Malbian is a Light-weight Debian Based GNU/Linux Distribution for Malware Analysis and Reverse Engineering designed to aid the user in both Static and Dynamic analysis of malware samples. 100% Free to use and distribute. About: https://github.com/MalbianLinux Installation Guide in: https://github.com/MalbianLinux/Malbian-ISOs/
    Downloads: 8 This Week
    Last Update:
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  • 24
    Advanced Persistent Security

    Advanced Persistent Security

    Advanced Persistent Threat Security

    The architecture of the system is integrated by different Fingerprinting mechanisms. The system is designed from a core that avoids the detection of sdhash and Memory analysis Built-in security, allows anonymous browsing by filtering requests external identification, Exit Tor Nodes and using the TOR Fingerprinting structure The system is designed to navigate without being detected or registered by any search engine or online platform denying all types of response to servers, The system will deny the pings, scan nmap and any type of test that is made to the system, Protecting from the core The mechanism of the system will prevent the retrieval of information or any forence attempt by creating a different identity at each beginning of the system and permanently erasing the previous identity with a click on you can hide your activity, delete safely with different modules, each identity is different to avoid the digital forensic analysis. advanceatz6x2ozf.onion / Site
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    Downloads: 2 This Week
    Last Update:
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  • 25
    Eskwela OS v2 PenTester 64bit

    Eskwela OS v2 PenTester 64bit

    PenTester's Edition is for educational and security analysis.

    This is the Eskwela OS version 2 - PenTester's Edition (64bit). This is a specialized distribution made by Eskwela OS. This is based on Ubuntu 14.04 LTS combined with some of the software available in Kali Linux. Use this distribution for educational purposes, penetration testing and security analysis.
    Downloads: 6 This Week
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