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

  • Ship Agents Faster Icon
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  • 1
    opentrack

    opentrack

    Head tracking app for games and flight simulation software

    opentrack is an application that can track users' head movements and relay this information to games and flight simulation software. It allows for output shaping, filtering, and the codebase builds on Windows, OSX and GNU/Linux.
    Downloads: 125 This Week
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  • 2
    plakar

    plakar

    plakar is a backup solution powered by Kloset and ptar

    plakar is an open-source backup solution designed to protect files, application data, and contextual metadata in a scalable way. It goes beyond basic file copying by storing data and its surrounding context inside Kloset, an immutable open-source data store. The project focuses on making backups easy to start while still supporting advanced data protection scenarios. It emphasizes security through end-to-end encryption for both backup data and metadata. Plakar is also built for reliability, using immutable storage to reduce the risk of accidental modification or corruption. Its main value is giving users and organizations a practical backup system that combines simple operation, strong protection, and support for large datasets with limited memory usage.
    Downloads: 124 This Week
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  • 3

    Privoxy

    HTTP proxy to block ads and customize webpages

    Privoxy is a non-caching web proxy with advanced filtering capabilities for enhancing privacy, modifying web page data and HTTP headers, controlling access, and removing ads and other obnoxious Internet junk. Privoxy has a flexible configuration and can be customized to suit individual needs and tastes. It has application for both stand-alone systems and multi-user networks.
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    Downloads: 429 This Week
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  • 4
    Blinkenlights

    Blinkenlights

    Tiniest x86-64-linux emulator

    The Blinkenlights project is a high-performance terminal emulator designed to provide a fast and responsive command-line experience. It focuses on delivering low-latency interactions and efficient rendering, making it suitable for developers who rely heavily on terminal workflows. The project is built with performance optimization in mind, leveraging modern techniques to minimize overhead. It supports standard terminal features while also introducing enhancements that improve usability and responsiveness. The design emphasizes simplicity and speed, ensuring that users can execute commands without delays. It is particularly useful for environments where performance is critical, such as remote development or heavy CLI usage. The project also aims to maintain compatibility with existing terminal tools and workflows. Overall, blink is a modern take on terminal emulation with a focus on performance and efficiency.
    Downloads: 46 This Week
    Last Update:
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  • Paessler: Easy to Use With Enterprise Power. Free Trial Icon
    Paessler: Easy to Use With Enterprise Power. Free Trial

    A low-code dashboard makes monitoring intuitive for any admin, while scripting and custom sensors give experts full control.

    You shouldn't have to choose between a monitoring tool that's easy to use and one that's powerful enough for a complex environment. PRTG's low-code interface lets any admin build dashboards, set alerts and monitor devices without scripting, while custom sensors and full API access are there when your team needs deeper control. One platform, no compromise. Download a free 30-day trial now.
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  • 5
    Gptgen is a tool to non-destructively convert hard disks partitioned in the common, "MSDOS-style" MBR scheme (including extended partitions) to use a GUID partition table (GPT).
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    Downloads: 55 This Week
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  • 6
    Modoboa

    Modoboa

    Mail hosting made simple

    Modoboa is a mail hosting and management platform including a modern and simplified Web User Interface. It provides useful components such as an administration panel and webmail. Modoboa integrates with well known software such as Postfix or Dovecot. A SQL database (MySQL, PostgreSQL or SQLite) is used as a central point of communication between all components. Modoboa is developed with modularity in mind, expanding it is really easy. Actually, all current features are extensions. It is written in Python 3 and uses the Django, jQuery and Bootstrap frameworks. Follow the evolution of your server traffic thanks to a few builtin graphics: messages distribution per type and average size. Easily use standard protocols like DKIM or DMARC to improve your sender reputation and so make sure your emails will be delivered. Consult your emails everywhere thanks to simple but functional builtin webmail.
    Downloads: 2 This Week
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  • 7
    Small tool for locate and display active DHCP servers on the subnet.
    Downloads: 18 This Week
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  • 8
    Scripts and tools to manage your Server.
    Downloads: 2 This Week
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  • 9
    Pexpect is a Python module for spawning child applications; controlling them; and responding to expected patterns in their output. Pexpect can be used for automating interactive applications such as ssh, ftp, passwd, telnet, etc. Pexpect is pure Python. Note that Pexpect development has moved to Github: https://github.com/pexpect/pexpect
    Downloads: 1 This Week
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  • Host LLMs in Production With On-Demand GPUs Icon
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  • 10
    loginx

    loginx

    a getty/login/xinit combination

    A complete tty login experience, replacing getty, login, and xinit. Features a friendly curses UI with a username picker box. Acts as a display manager and launches X when .xinitrc exists. Handles failures and falls back to a plain shell if X does not start.
    Downloads: 4 This Week
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  • 11
    1hub is an IPC tool with a file-system interface and a (genuinely) simple textual protocol.
    Downloads: 0 This Week
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  • 12
    Auth.js

    Auth.js

    Authentication for the Web

    Auth.js is a set of open-source packages that are built on standard Web APIs for authentication in modern applications with any framework on any platform in any JS runtime.
    Downloads: 0 This Week
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  • 13
    Backtory is a slim backup/restore software for unix-like operating systems, designed for stand-alone internet servers. It features differential backups, remote storage using various protocols as well as encryption/signing of backup archives.
    Downloads: 0 This Week
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  • 14
    COOK

    COOK

    Software build-automation tool written in Common Lisp

    COOK is a software build-automation tool made with a goal of letting you, the programmer, to utilize the most elegant and powerful programming language - Common Lisp - for managing your software builds. You write a recipe file which describes what objectives must be constructed. COOK will load and process this file, then produce either a regular Makefile or a Bourne Shell script, which will actually perform the task of building and installing your targets.
    Downloads: 0 This Week
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  • 15
    DirectTrace soll über eine Traceroute Implementierung Daten über ein Netzwerk sammeln und mithilfe von DirectX in 3D darstellen.
    Downloads: 0 This Week
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  • 16
    Dennix

    Dennix

    Dennix is a unix-like hobbyist operating system written from scratch

    Dennix is a Unix-like operating system with a monolithic kernel written in C++ and a POSIX-compliant userland. It is a fully self-hosting operating system, meaning it can compile itself from within its own environment. Dennix includes a basic windowing system, dynamic linker, and terminal interface, and supports ELF binaries, memory management, and multitasking. As a hobbyist OS, it offers an impressive amount of functionality and polish, making it a notable example in the field of self-built systems.
    Downloads: 0 This Week
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  • 17
    Task scheduling service written completely in managed C#. The service can be linked into other projects (DLL) or installed as a stand-alone Windows service (EXE), and is able of executing tasks written in any .NET language.
    Downloads: 0 This Week
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  • 18
    pips is a ports-style system for building packages that is package-manager agnostic - i.e. it can build a variety of package types and it is easy to add support for more.
    Downloads: 0 This Week
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  • 19
    This is Python module for RAR archive reading. The interface is made as `zipfile` like as possible.
    Downloads: 0 This Week
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  • 20
    dellflash
    Dellflash is a utility to flash the BIOS of Dell computers in OpenBSD.
    Downloads: 0 This Week
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  • 21
    diskrescue
    A tool to verify and/or recover as much data as possible from failed disks. When a sector can not be read it will be filled with zeroes and diskrescue continues. The resulting disk/file can be checked with fsck and analyzed with dumpfs and fsdb.
    Downloads: 0 This Week
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  • 22

    ethflop

    a DOS TSR that emulates a floppy disk drive over ethernet

    ethflop is a DOS TSR that emulates a floppy disk drive. Such virtual floppy disk is, in fact, stored on a Linux server as a classic floppy image. All the communication between ethflop (the TSR) and ethflopd (the Linux daemon) is based on raw Ethernet. No need for any network configuration - the DOS PC only needs to have some kind of Ethernet adapter (physical or emulated, for example through PLIP) and a suitable packet driver.
    Downloads: 0 This Week
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  • 23
    glaucus

    glaucus

    A simple and lightweight Linux distribution based on musl libc

    Glaucus is a Linux distribution built from scratch, focusing on simplicity, security, and performance.
    Downloads: 0 This Week
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  • 24
    iogen
    iogen is a lightweight tool that generates heavily fragmented I/O. This tool is intended to test storage stacks under stress and worst case scenarios. Due to heavy fragmentation of the I/O files, it tends to "bypass" caching algorithms in hardware.
    Downloads: 0 This Week
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  • 25

    openbsd wifi manager

    GUI for wifi connections

    Small perl script for a graphical front end to OpenBSD's ifconfig command specifically for wireless connections.
    Downloads: 0 This Week
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