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.

  • Gen AI apps are built with MongoDB Atlas Icon
    Gen AI apps are built with MongoDB Atlas

    Build gen AI apps with an all-in-one modern database: MongoDB Atlas

    MongoDB Atlas provides built-in vector search and a flexible document model so developers can build, scale, and run gen AI apps without stitching together multiple databases. From LLM integration to semantic search, Atlas simplifies your AI architecture—and it’s free to get started.
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  • AI-generated apps that pass security review Icon
    AI-generated apps that pass security review

    Stop waiting on engineering. Build production-ready internal tools with AI—on your company data, in your cloud.

    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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  • 1
    WinMerge

    WinMerge

    Windows visual diff and merge for files and directories

    WinMerge is a Windows tool for visual difference display and merging, for both files and directories. It is highly useful for determining what has changed between file versions, and then merging those changes. WinMerge has Unicode support, Flexible syntax coloring editor, Visual SourceSafe integration, and Windows Shell integration. Regexp filtering for filenames and lines. Side-by-side line difference and highlights differences inside lines. A file map shows the overall file differences in a location pane. The user interface is translated into several languages.
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    Downloads: 33,710 This Week
    Last Update:
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  • 2
    NSIS: Nullsoft Scriptable Install System

    NSIS: Nullsoft Scriptable Install System

    Windows installer development tool

    NSIS (Nullsoft Scriptable Install System) is a professional open source system to create Windows installers. It is designed to be as small and flexible as possible and is therefore very suitable for internet distribution. Being a user's first experience with your product, a stable and reliable installer is an important component of succesful software. With NSIS you can create such installers that are capable of doing everything that is needed to setup your software. NSIS is script-based and allows you to create the logic to handle even the most complex installation tasks. Many plug-ins and scripts are already available: you can create web installers, communicate with Windows and other software components, install or update shared components and more.
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    Downloads: 9,770 This Week
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  • 3
    CLISP - an ANSI Common Lisp
    CLISP is a portable ANSI Common Lisp implementation and development environment by Bruno Haible. Interpreter, compiler, debugger, CLOS, MOP, FFI, Unicode, sockets, CLX. UI in English, German, French, Spanish, Dutch, Russian, and Danish.
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    Downloads: 369 This Week
    Last Update:
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  • 4
    ClipAngel

    ClipAngel

    Clipboard history capture and paste tool

    This program belongs to class "Clipboard Manager". It captures many clipboard objects and allows user to select and paste one in any program. Inspired by analogs: ClipDiary, Ditto, AceText. Main priorities: usability, compatibility, reliability. Requires .Net Framework 4.52+ (Windows Vista+/Server 2008+)
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    Downloads: 134 This Week
    Last Update:
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  • Enterprise-grade ITSM, for every business Icon
    Enterprise-grade ITSM, for every business

    Give your IT, operations, and business teams the ability to deliver exceptional services—without the complexity.

    Freshservice is an intuitive, AI-powered platform that helps IT, operations, and business teams deliver exceptional service without the usual complexity. Automate repetitive tasks, resolve issues faster, and provide seamless support across the organization. From managing incidents and assets to driving smarter decisions, Freshservice makes it easy to stay efficient and scale with confidence.
    Try it Free
  • 5
    PHP File Manager

    PHP File Manager

    phpFileManager a complete filesystem management tool on a single file.

    phpFileManager is a complete filesystem management tool on a single file. A server administration tool using PHP, meant for rapid file access, and also to verify the server configuration and security. The script can be renamed and deployed on an unique known url, and offers password protection.. All dependencies, like images, js and css files, are included inside the same file, so that the script can run even on offline devices, like a local Raspberry Pi, or ESP32 microcontroller. The size of the script is bellow 1Mb, and i want to make it even smaller. To conclude, this script is also a repository of several hand made functions, organized in sections, meant for learning PHP and explore all PHP capabilities. You can learn, copy and use them on your own projects. Help the project with a donation: Will allow the view of two phpFileManager from diferent URLs on the same screen. Like MC (Midnight Commander) does. https://www.dulldusk.com/product/donation-for-phpfilemanager/
    Downloads: 51 This Week
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  • 6
    MTKRoot

    MTKRoot

    MTKroot 3 – Root Tool for MediaTek (MTK) Devices

    MTKroot 3 is an open-source tool designed to simplify the process of obtaining root access on Android devices powered by MediaTek (MTK) chipsets. Developed with a focus on compatibility and ease of use, this tool provides advanced users and developers with the ability to unlock their device's full potential, enabling custom ROM installations, system-level modifications, and deeper control over the Android OS.
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    Downloads: 275 This Week
    Last Update:
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  • 7
    MyOpenLab
    The most recent distribution of MyOpenLab can be downloaded from: myopenlab.org Follow us on Facebook as MyOpenLab Colombia https://www.facebook.com/myopenlabcolombia/ Subscribe, like and watch our MyOpenLab videos: https://www.youtube.com/channel/UCet6UPnaHKGjtbytJHIf2jQ Thanks!
    Downloads: 38 This Week
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  • 8
    ZK - Simply Ajax and Mobile
    ZK is an open-source Java framework for building modern web and mobile applications. It enables developers to create rich, interactive UIs using only Java — no JavaScript required. With 200+ Ajax-powered components, event-driven architecture, and support for popular technologies like Spring, Java EE, and JSP/JSF, ZK makes it simple to deliver powerful and user-friendly web applications.
    Downloads: 8 This Week
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  • 9
    Debreate - Debian Package Builder

    Debreate - Debian Package Builder

    A utility for creating Debian packages (.deb)

    Debreate is a utility to aid in creating Debian (.deb) packages. Currently it only supports binary packaging (note that the term "binary package" is used loosely, as such packages can contain scripts & non-code items such as media images, audio, & more) for personal distribution. Plans for using backends such as dh_make & debuild for creating source packages are in the works. But source packaging can be quite different & is a must if you want to get your packages into a distribution's official repositories or a Launchpad Personal Package Archive (PPA). The latter from which Debreate is available.
    Downloads: 5 This Week
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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.

    Windows Task Scheduler might be hiding critical failures. Download the free JAMS diagnostic tool to uncover problems before they impact production—get a color-coded risk report with clear remediation steps in minutes.
    Download Free Tool
  • 10
    Daphne

    Daphne

    GPL task manager replacement for Windows

    Daphne is a system tray application for process killing, controlling and debugging. It's development started back in 2005. It was first thought to kill a set of windows process at once. With the time it became a GPL task manager replacement for Windows. You can kill a process by dragging the mouse over the windows, by right-clicking the process in the main process list, or by typing its name with the "Kill all by name" command. You can set a any window to be always on top, to be transparent, to be enable, et cetera. Although Daphne was born just to kill windows process. You can think of Daphne as a task manager replacement. The main window displays a list of currently running process with detailed information about: CPU usage, Process ID, Process name, Full path (and arguments), Priority, Class (Process / Service), Current memory usage, Peek memory usage, Current swap usage, Peek swap usage and Number of threads.
    Downloads: 10 This Week
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  • 11
    WHMCS VPS Reseller

    WHMCS VPS Reseller

    Cloud VPS Reseller Provisioning Module for WHMCS

    Best WHMCS VPS Reseller Module on Marketplace Integrate with ready-made WHMCS module to leverage auto-provision of Cloud VPS servers from your private-label cloud controller. By integrating with Rad Web Hosting VPS Reseller module, your VPS procurement headaches are over. Your Own Virtual Private Datacenter You instantly have access to your own Virtual Private Cloud VPS cluster-with automated server provisioning available direct from your WHMCS and delivered by you to your end-users. With on-demand VPS provisioning and a full suite of applications and included OS templates, you'll greatly reduce the time-to-market-all without the hassle and costs of building your own cloud data center from scratch. Become Cloud Leaders Your end users will not only have VPS administration abilities from the WHMCS interface, thanks to our VPS Reseller provisioning module, but they can also access incredible feature-rich white-label VPS control panel.
    Downloads: 2 This Week
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  • 12
    vmm - a virtual mail manager

    vmm - a virtual mail manager

    command line tool to manage email (alias-)domains/accounts/aliases …

    vmm is the easy to use and configurable command line tool for administrators and postmasters, to manage domains, alias-domains, accounts and relocated mail users. It allows the fast and easy management of mail servers. vmm is written in Python. It's designed for installations using Dovecot and Postfix with a PostgreSQL backend.
    Downloads: 2 This Week
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  • 13
    Atricore’s JOSSO is an open source and commercially supported Internet Single Sign-On (FSSO) solution for point-and-click and standards-based (SAML2) Internet-scale SSO implementations. For more information contact us at : http://www.josso.org
    Downloads: 1 This Week
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  • 14
    TEA is a text editor that provides a wide range of text-processing functions (over 100) and the syntax highlighting. There are two branches of TEA: Qt-based and GTK-based.
    Downloads: 3 This Week
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  • 15
    BinEditor is a editor for binary files, can show the bytes or nibbles as hexadecimal, decimal or binary value. Currently the project is dead, if any want to takeover, email to mariocastelancastro@gmail.com
    Downloads: 2 This Week
    Last Update:
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  • 16

    Pegotes

    Un pastebin realmente sencillo

    Pegotes es un pastebin sencillo que trata de generar el menor tráfico de red posible. Para lograrlo, cuenta con una interfaz gráfica ligera y tres APIs. Además, está traducido a siete idiomas además del español.
    Downloads: 2 This Week
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  • 17
    VINARI SOFTWARE

    VINARI SOFTWARE

    Software Facil, Vida Facil

    Vinari Software brinda aplicaciones útiles para Microsoft Windows y distribuciones GNU/Linux, las cuales hacen que la informatica moderna sea mas sencilla. Todas estas aplicaciones estan protegidas bajo la licencia BSD, la cual puede ser leída en el siguiente enlace: https://vinarisoftware.wixsite.com/vinari/licencia
    Downloads: 2 This Week
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  • 18
    Cybermen - SPC

    Cybermen - SPC

    Services platform in cluster for Java.

    Cybermen - SPC (Services Platform in Cluster) es una plataforma de servicios y clúster de procesamiento distribuido, orientado principalmente al desarrollo de aplicaciones de supervisión, control y adquisición de datos (SCADA) y control distribuido (DCS). Cybermen - SPC de por sí, no hace a las aplicaciones SCADA o DCS, pero constituye una base para el desarrollo de este tipo de soluciones, basándose para las mismas en una arquitectura de servicios colaborativos (SOA) y operando en un clúster de procesamiento. Por estar vasado en Java SE, Cybermen - SPC no solo es cross-platform (opera en cualquier sistema operativo que soporte java) sino que al mantenerse dentro de Standard Edition y operar con un numero acotado de dependencias externas, funciona con bajos requerimientos de hardware. Tanto, que sus nodos de procesamiento son capases de operar en hardware ARM v7 con soporte para Java SE Embedded
    Downloads: 1 This Week
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  • 19
    Gobisoft

    Gobisoft

    Software auto-installation builder

    Gobisoft is a batch package builder for applications, it builds a self-install package of your programs. Creates a stand alone executable file that performs the (secured installation and removing) of the elements necessary to distribute your applications. The software offers many possibilities, such as executing commands before and after installation.
    Downloads: 1 This Week
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  • 20
    Infodomestic Objects
    Infodomestic Objects - This is a set of distribution software that mutate the environment providing and advanced interaction experience. We will use a mixed POSIX/Linux/BSD based platform to develop and distribute our interaction experience improvement.
    Downloads: 1 This Week
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  • 21
    Jcrontab is a scheduler written in java. Jcrontab is designed to be extended and integrated with any project. Reads and stores the tasks to execute in a file, a database or an EJB and provides a basic web UI.
    Downloads: 1 This Week
    Last Update:
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  • 22
    Af-Arch is an Open Source N-tier framework to build distribuited applications. Its license schema allows Open Source and commercial (closed source) applications. This is the foundation to build an new set of applications in a fast and reliable way.
    Downloads: 1 This Week
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  • 23
    Track all your files, locally, on CD-ROMs, and on removables.
    Downloads: 1 This Week
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  • 24
    This program, by default, will help you updating Linux easily (actually only Debian). Also it has help for configure the updates. It can be used for install your program who has dependences automatically. It's thought for help new Linux users.
    Downloads: 1 This Week
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  • 25
    A modern secure, robust, multithreaded, exception aware, internationalisable, portable GUI toolkit library designed for mission-critical work in C++ and Python forked from the FOX library. Replicates the Qt API in many places.
    Downloads: 1 This Week
    Last Update:
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