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

    The database for AI-powered applications.

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    The All-in-One Commerce Platform for Businesses - Shopify

    Shopify offers plans for anyone that wants to sell products online and build an ecommerce store, small to mid-sized businesses as well as enterprise

    Shopify is a leading all-in-one commerce platform that enables businesses to start, build, and grow their online and physical stores. It offers tools to create customized websites, manage inventory, process payments, and sell across multiple channels including online, in-person, wholesale, and global markets. The platform includes integrated marketing tools, analytics, and customer engagement features to help merchants reach and retain customers. Shopify supports thousands of third-party apps and offers developer-friendly APIs for custom solutions. With world-class checkout technology, Shopify powers over 150 million high-intent shoppers worldwide. Its reliable, scalable infrastructure ensures fast performance and seamless operations at any business size.
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  • 1
    99 Nights In The Forest Script [Keyless]

    99 Nights In The Forest Script [Keyless]

    99 Nights Script Keyless: Kill Aura, Auto Combat, Auto Craft, & more.

    This is Keyless Script work Only 99 Nights in The Forest Roblox Game. We tested the script using Xeno Executor, and it works perfectly. Therefore, for your convenience, the script comes with an injector that is perfectly suited for it. In this case, it is Xeno. In addition, this script does not require a key, so you can use it without any problems.
    Downloads: 268,885 This Week
    Last Update:
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  • 2
    Steal a Brainrot Script (Keyless)

    Steal a Brainrot Script (Keyless)

    Keyless Roblox Scripts: Auto Steal Brainrot, AutoLock Base, ESP & more

    (This is Keyless Script work Only Steal a Brainrot Roblox Game) There are already many scripts available for this mode, but our script is truly one of the few that offers significantly more extensive capabilities. The perfect implementation of the Auto Steal feature alone is worth it. Thanks to it, you can automatically steal brainrots from players almost instantly. There are many features, most of which I have listed below. We tested the script using Xeno Executor, and it works perfectly. Therefore, for your convenience, the script comes with an injector that is perfectly suited for it. In this case, it is Xeno. In addition, this script does not require a key, so you can use it without any problems. How to install? Open README.txt for instructions.
    Downloads: 115,702 This Week
    Last Update:
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  • 3
    Murder Mystery 2 Script MM2 (Keyless)

    Murder Mystery 2 Script MM2 (Keyless)

    Murder Mystery 2 Roblox Scripts: Auto Farm, Kill All (Keyless) MM2

    This is Keyless Script work Only Murder Mystery 2 Roblox Game. Bombastic script including Tp To Gun, Kill All, Kill Sheriff, Auto Farm and Esp, allowing you to level up quickly and enjoy flawless progression without stress or effort. We tested the script using Xeno Executor, and it works perfectly. Therefore, for your convenience, the script comes with an injector that is perfectly suited for it. In this case, it is Xeno. In addition, this script does not require a key, so you can use it without any problems. How to install? Open README.txt for instructions.
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    Downloads: 114,601 This Week
    Last Update:
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  • 4
    99 Nights in The Forest Script NO KEY

    99 Nights in The Forest Script NO KEY

    99 Nights in the Forest Script - Bring All, Auto Win, Auto Kill.

    🛠️Download Free Scripts for 99 Nights in the Forest featuring ESP, Aimbot, Auto Tree Farm, Flying, and Instant Teleporting to all major items and enemies. Built with Rayfield UI. Perfect for farming, looting, and survival. Best Executor : https://sourceforge.net/projects/roblox-executor-wave/ ⚠️ Disclaimer Using scripts in Roblox can result in bans. Use at your own risk. 99 Nights in the Forest script no key, 99 Nights in the Forest codes,
    Downloads: 203,498 This Week
    Last Update:
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  • 5
    99 Nights In The Forest Script | Keyless

    99 Nights In The Forest Script | Keyless

    99 Nights Script Keyless: Kill Aura, Auto Combat, Auto Craft, & more.

    Main and Popular Features of 99 Nights in the Forest Scripts In 99 Nights in the Forest, there are quite a few different activities, and thus various scripts are endowed with different capabilities that provide a significant advantage for survival. Each script has its features, but some may be the same or very similar. The amount of active functionality also varies. Below you can find popular script features: What is the best executor for Roblox scripts? The best executor for Roblox, specifically for 99 Nights in the Forest, is Xeno. It's simple, available on mobile devices, and easy to use. https://sourceforge.net/p/delta-executor-roblox/ Is it safe to use scripts in 99 Nights in the Forest? Scripts are a form of cheats, and therefore Roblox developers or the creators of 99 Nights in the Forest may penalize you for using them. However, since it's not a competitive game, there might not be any punishment. We recommend using scripts when playing with friends or alone.
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    Downloads: 46,784 This Week
    Last Update:
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  • 6
    Plants Vs Brainrots Script (Keyless)

    Plants Vs Brainrots Script (Keyless)

    Keyless Roblox Scripts: Auto Gift, Auto Equip Best, Auto Farm

    [This is Keyless Script work Only Plants Vs Brainrots Roblox Game] We worked on this script for a long time! I hope you appreciate it. Let me tell you a little about the main features of this script: Auto Gift automatically gathers all the gifts available in the game without any user input. Auto Equip Best is a strong script designed to automatically select and equip the top pets or items for the player, which is particularly helpful in games where having the best gear is crucial for success. Auto Farm is a program that automatically grants you all essential game resources, including money, experience, and various items. This is only a small part of the features! We tested the script using Xeno Executor, and it works perfectly. Therefore, for your convenience, the script comes with an injector that is perfectly suited for it. In this case, it is Xeno. In addition, this script does not require a key, so you can use it without any problems. How to install? Open README.txt
    Downloads: 41,187 This Week
    Last Update:
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  • 7
    TGM Gaming Macro

    TGM Gaming Macro

    Lets you have a macro mouse n keyboard functionally with ordinary one.

    Official TGMacro Websites: 🌐 https://trksyln.net/projects/TGM-Gaming-Macro-(TGMacro)-4 🌐 https://gettgmacro.com ⚡ TGMacro turns any ordinary mouse and keyboard into powerful macro devices. Easily create or record multiple macros, assign each to different keys or key combinations, and trigger or loop them whenever you need—whether it’s rapid-fire actions in games, complex multi-step workflows, or simple shortcuts that save you time every day. 🎮 Designed for gamers, but versatile enough for everyday tasks—TGMacro gives you full control and flexibility. 💡 Questions, bug reports, or feature requests? Older versions: https://trksyln.net/contact Current version: https://gettgmacro.com/contact Discord channel: https://discord.gg/gJ5ZNt4AAW https://gettgmacro.com/GetStarted
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    Downloads: 23,636 This Week
    Last Update:
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  • 8
    antimicro

    antimicro

    Graphical program to map keyboard and mouse controls to a gamepad

    antimicro is a graphical program used to map keyboard keys and mouse controls to a gamepad. It's useful for using a gamepad on PC games that do not have any form of built-in gamepad support. This program can also be used to control any desktop application with a gamepad. On Linux, this means that your system has to be running an X environment in order to run this program. This program currently works with various Linux distributions, Windows (Vista and later), and FreeBSD, but with limited support for FreeBSD and Windows XP.
    Downloads: 3,202 This Week
    Last Update:
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  • 9
    vJoy
    This project was originally designed to provide an open-source replacement for PPJoy. The product, at this point, consists of virtual joystick devices that is seen by the system as a standard joystick but its position-data is written to it by a feeder application. An existing feeder application that takes advantage of this product is SmartPropoPlus. If you are an application writer you can very easily write an application that controls a joystick (e.g. mouse-to-joystick, keyboard-to-joystick). If you are a beginner in device drivers you can take this code and enhance it to support more (or less) axes, buttons or POVs.
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    Downloads: 6,836 This Week
    Last Update:
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    Build Securely on Azure with Proven Frameworks

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  • 10
    DS4Windows

    DS4Windows

    DS4Windows allows you to use a DualShock 4 Controller on your PC

    DS4Window is an open-source program that will allow someone to get the experience of using a Playstation 4 DualShock Controller on a PC by emulating a Xbox 360 Controller.
    Downloads: 597 This Week
    Last Update:
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  • 11
    Nestopia
    A portable and cycle-accurate NES/Famicom emulator written in C++
    Leader badge
    Downloads: 2,436 This Week
    Last Update:
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  • 12
    DeSmuME

    DeSmuME

    DeSmuME is a Nintendo DS emulator

    DeSmuME is the most seasoned open source Nintendo DS emulator. It sports tools designed for hackers, speedrunners, youtubers, and casual gamers. Homebrew programs are supported and can even be debugged through GDB. The Windows and OSX versions are both relatively feature rich, and there is a small universe of forks and mods that add even more features for casual gaming. DeSmuME is the origin of RetroArch and OpenEmu Nintendo DS support and is used by several mobile Nintendo DS emulators, with the notable exception of DraStic. DeSmuME's source code is now hosted at https://github.com/TASVideos/desmume/ win32 autobuilds @ https://ci.appveyor.com/project/zeromus/desmume/build/artifacts
    Leader badge
    Downloads: 1,698 This Week
    Last Update:
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  • 13
    Bloxstrap

    Bloxstrap

    An alternative bootstrapper for Roblox with a bunch of extra features

    Bloxstrap is a third-party replacement for the standard Roblox bootstrapper, providing additional useful features and improvements. Bloxstrap is a community-made utility for Roblox that allows players to customize and enhance their gameplay experience. It functions similarly to Roblox’s official launcher but provides additional features and settings that are not available through the default launcher. Bloxstrap offers options like the ability to skip the Roblox loading screen, customize graphics settings more extensively, and even maintain previous versions of the client. It’s particularly popular among users who want more control over their Roblox experience or who need to troubleshoot specific game performance issues. The tool is easy to install and integrates seamlessly with Roblox for a smoother and more personalized user experience.
    Downloads: 254 This Week
    Last Update:
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  • 14
    MultiMC

    MultiMC

    Launcher for Minecraft that allows you to easily manage installations

    MultiMC is an alternative launcher for Minecraft. It allows you to have multiple, cleanly separated instances of Minecraft (each with their own mods, resource packs, saves, etc) and helps you manage them and their associated options with a simple and powerful interface.
    Downloads: 248 This Week
    Last Update:
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  • 15
    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: 196 This Week
    Last Update:
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  • 16
    Prism Launcher

    Prism Launcher

    Custom launcher for Minecraft to easily manage installations

    An Open Source Minecraft launcher with the ability to manage multiple instances, accounts, and mods. Focused on user freedom and free redistributability. Install and launch modpacks easily, while keeping them clean. No longer do you need to manually install them, and easily update mod packs, Prism Launcher can do these tasks for you, without installing tons of separate launchers. Prism Launcher is able to download & update individual mods from outside of modpacks using Modrinth and CurseForge. Each Minecraft instance has its own folder, with separate mods, resource packs and other things. You don't need an embedded web browser as a game launcher. Prism Launcher uses the Qt toolkit, which requires little system resources. Prism Launcher also lets you customize the menu and supports custom themes.
    Downloads: 183 This Week
    Last Update:
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  • 17
    D-Fend Reloaded

    D-Fend Reloaded

    A graphical environment for DOSBox

    D-Fend Reloaded is a graphical environment for DOSBox. D-Fend Reloaded is a successor of the discontinued D-Fend. Both environments look alike and D-Fend Reloaded contains all features of D-Fend. Even the D-Fend config files can be used.
    Leader badge
    Downloads: 757 This Week
    Last Update:
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  • 18
    Denise

    Denise

    C64/Amiga emulator with shader and runAhead

    Denise is a cycle accurate and platform independant C64 / Amiga 500/1000 emulator. My motivation for this project is understanding how it works and write clean and easy readable code. RetroArch SLANG shaders are supported by Denise. Features already known from the C64 emulation, such as runAhead, savestates, drive sounds, PAL encoding, dynamic rate control, G-Sync/FreeSync, Warp, just in time polling are also available for the Amiga. Denise supports SuperCPU, Final Chesscard, REU, GeoRam, EasyFlash, EasyFlash³, Gmod2, Retro Replay, Action Replay, Final Cartridge, Light Guns/Pens, GunStick, Mouse 1351, Mouse Neos, Paddles, fast loaders such as ProfDOS, PrologicDOS, DolphinDOS, ProSpeed 1571, Turbo Trans, 1571, 1581, drag'n'drop and command line support. GIT repo: https://bitbucket.org/piciji/denise/src/master
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    Downloads: 704 This Week
    Last Update:
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  • 19
    Citra

    Citra

    A Nintendo 3DS Emulator

    Citra is an experimental open-source Nintendo 3DS emulator/debugger written in C++. It is written with portability in mind, with builds actively maintained for Windows, Linux and macOS. Citra emulates a subset of 3DS hardware and therefore is useful for running/debugging homebrew applications, and it is also able to run many commercial games! Some of these do not run at a playable state, but we are working every day to advance the project forward. (Playable here means compatibility of at least "Okay" on our game compatibility list.) Citra is licensed under the GPLv2 (or any later version). Refer to the license.txt file included. Please read the FAQ before getting started with the project. If you want to contribute please take a look at the Contributor's Guide and Developer Information. You should also contact any of the developers in the forum in order to know about the current state of the emulator because the TODO list isn't maintained anymore.
    Downloads: 141 This Week
    Last Update:
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  • 20
    Flame Auto Clicker

    Flame Auto Clicker

    Fastest Auto Clicker on the market . Over 1000 CPS (For Real)

    Flame Auto Clicker is an Open Source minimalist Auto Clicker. The CPS limit is your PC, but you can also add delay or click limit, or change the click button or start/stop clicking with a HotKey, which can be edited too. This Auto Clicker can be used with ANY game, Minecraft, Roblox and more! Source Code: GitHub: https://github.com/PETEROLO291/Flame-Auto-Clicker TIP: Set delay to 0 to get super fast clicks. Clicks are only limited by your PC hardwere! Installer: 9,22 MB Program: 27,3 MB Version: 1.6.1 New in Version 1.6.1: -Fixed the bug that caused the Settings window to appear under the main window -Now you can start and stop with the same hotkey -Other minor bugs have been fixed -Fixed a bug that didn't allow the program work with normality if the "Click until stopped" box was checked If you liked this project consider buying me a coffee ☕ Buy me a coffee ☕: https://www.paypal.me/PeterJSM Consider trying Ozyr: https://sourceforge.net/projects/ozyr/
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    Downloads: 653 This Week
    Last Update:
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  • 21
    Roblox Shaders

    Roblox Shaders

    Roblox Shader – Download on Any GPU

    Roblox Shader – Universal Graphics Enhancement for All GPUs Roblox Shader is a high-performance, universal shader mod designed to enhance Roblox graphics with realistic lighting, shadows, and post-processing effects. This shader pack is optimized for all graphics cards, including NVIDIA, AMD, and Intel GPUs, ensuring compatibility across virtually any system. Whether you're looking to improve Roblox visuals with better lighting or want a more immersive gaming experience, Roblox Shader delivers stunning results with minimal performance impact. Easy to install and remove, this shader is perfect for players who want to customize Roblox graphics without needing advanced technical knowledge. Why Choose Roblox Shader? If you're searching for a Roblox shader that works on every graphics card and improves visual quality without slowing down your system, Roblox Shader is the ultimate choice. Boost your Roblox experience today! Tags: Roblox Shader, Roblox Graphics Mod,robloxs shaders
    Leader badge
    Downloads: 839 This Week
    Last Update:
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  • 22
    Input Remapper

    Input Remapper

    An easy to use tool to change the behaviour of your input devices

    An easy-to-use tool to change the behavior of your input devices. Supports X11, Wayland, combinations, programmable macros, joysticks, wheels, triggers, keys, mouse movements and more. Maps any input to any other input.
    Downloads: 121 This Week
    Last Update:
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  • 23
    99 Nights In The Forest Script / No Key

    99 Nights In The Forest Script / No Key

    99 Nights Script Keyless: Auto Farm, Kill Aura, Teleport + more

    Download the New Best Keyless Script for 99 Nights in The Forest Roblox — No Key System, Safe, and Updated for 2025! This script is completely keyless, providing a seamless and secure gaming experience. It has been updated for 2025, bringing improved features and better performance, making your gameplay smoother and more enjoyable. We’ve tested the script with Xeno Executor, and it works flawlessly. To make things even easier, we've included an injector that's perfectly compatible with it, specifically Xeno. Best of all, since this script doesn’t require a key, you can enjoy it without any hassle. Xeno : https://sourceforge.net/projects/xeno-executor-roblox/ PC requirements : Operating System: Windows 10 (64-bit) or Windows 11 Processor: Intel Core i3-2120 or equivalent Graphics: DirectX 10 compa Memory: 4 GB RAM Storage: At least 1 GB of free space Internet: 4–8 Mbit/s recommended Supported Browsers: Chrome, Firefox, Microsoft Edge
    Downloads: 1,671 This Week
    Last Update:
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  • 24
    PPSSPP

    PPSSPP

    A cross-platform PSP emulator

    PPSSPP is an open source, cross-platform PSP emulator which allows you to play your PSP games on Android, Windows, Mac or Linux. With PPSSPP you can play your PSP games on your PC in full HD resolution, or play on your tablet for a big-screen mobile gaming experience. PPSSPP enhances the gaming experience in more ways than one. It even upscales some textures that would otherwise be too blurry due to the fact that they were originally made for the small screen. Even on modern Android phones and tablets you can enjoy double the original resolution. Get a whole new and better PSP gaming experience with PPSSPP now!
    Downloads: 112 This Week
    Last Update:
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  • 25
    99 Nights Script | Auto Farm, Kill Aura

    99 Nights Script | Auto Farm, Kill Aura

    99 Nights Script: Kill Aura, Auto Combat, Auto Craft, & more No Key

    99 Nights In The Forest Roblox Script Free Download No Key / FREE DIAMONDS in 99 NIGHTS IN THE FOREST 👋 Welcome Welcome to the SourceForge repository! Here you'll find a Lua cheat script for the Roblox game "99 Nights in the Forest." 99 Nights Scripts with Kill Aura No key. Auto farm in 99 nights roblox game Unlock powerful features in 99 Nights in the Forest with this keyless Roblox script – no key system, no delays! Includes Bring Item, ESP (player/item tracking), and Teleport for fast exploration and survival. Boost your gameplay with this free, undetected, and easy-to-use script. ⚠️ Is It Safe to Use Scripts in 99 Nights in the Forest? Using scripts in Roblox, including in 99 Nights in the Forest, is considered a form of cheating and may violate the Roblox Terms of Service. This scripts can help you resolve your problems in 99 nights in woods roblox game
    Downloads: 1,430 This Week
    Last Update:
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