Browse free open source Games and projects for Windows and Linux below. Use the toggles on the left to filter open source Games by OS, license, language, programming language, and project status.

  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

    With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

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  • Context for your AI agents Icon
    Context for your AI agents

    Crawl websites, sync to vector databases, and power RAG applications. Pre-built integrations for LLM pipelines and AI assistants.

    Build data pipelines that feed your AI models and agents without managing infrastructure. Crawl any website, transform content, and push directly to your preferred vector store. Use 10,000+ tools for RAG applications, AI assistants, and real-time knowledge bases. Monitor site changes, trigger workflows on new data, and keep your AIs fed with fresh, structured information. Cloud-native, API-first, and free to start until you need to scale.
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  • 1
    Stellarium

    Stellarium

    A planetarium software that shows a 3D simulation of the night sky

    Stellarium renders 3D photo-realistic skies in real time with OpenGL. It displays stars, constellations, planets, nebulae and others things like ground, landscape, atmosphere, etc.
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    Downloads: 2,993 This Week
    Last Update:
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  • 2
    FreeCol

    FreeCol

    Colonize the New World.

    FreeCol is a turn-based strategy game based on the old game Colonization, and similar to Civilization. The objective of the game is to create an independent nation. You start with only a few colonists defying the stormy seas in their search for new land. Will you guide them on the Colonization of a New World? The last stable version release can be found here: https://sourceforge.net/projects/freecol/files/latest/download The latest test pre-release of the next version can be found here: https://github.com/FreeCol/freecol/releases If you want to contribute to Freecol please visit our welcome information thread to see how here: https://sourceforge.net/p/freecol/discussion/719661/thread/2d0063a3bc/
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    Downloads: 524 This Week
    Last Update:
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  • 3
    Celestia

    Celestia

    Real-time 3D visualization of space

    Celestia is an application for real-time 3D visualization of space, with a detailed model of the solar system, over 100,000 stars, more than 10,000 galaxies, and an extension mechanism for adding more objects.
    Downloads: 67 This Week
    Last Update:
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  • 4
    OpenKore

    OpenKore

    OpenKore is an automation tool for Ragnarok Online

    OpenKore is an automation tool for Ragnarok Online-compatible games, authorized to be used on KoreRO. **MOVING TO GITHUB** As of February 28th 2016, the OpenKore project has moved to GitHub. Please see the OpenKore wiki for more information: http://openkore.com/index.php/Git This SourceForge page will remain online for now, but the project has been locked in "read-only" mode and no more updates will be published here. **DOWNLOADING KORE FROM THIS PAGE WILL GIVE YOU AN OLD VERSION**
    Downloads: 45 This Week
    Last Update:
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  • D&B Hoovers is Your Sales Accelerator Icon
    D&B Hoovers is Your Sales Accelerator

    For sales teams that want to accelerate B2B sales with better data

    Speed up sales prospecting with the rich audience targeting capabilities of D&B Hoovers so you can spend more sales time closing.
    Learn More
  • 5
    OpenTTD is an open source clone of the Microprose game "Transport Tycoon Deluxe". For more recent versions visit our website: http://www.openttd.org
    Downloads: 18 This Week
    Last Update:
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  • 6
    Live Game Server List (LGSL)

    Live Game Server List (LGSL)

    LGSL (Live Game for PHP 5.4-8+: online status for various gameservers

    LGSL (Live Game Server List) for PHP 5.4-8.3+: online status for Discord, FiveM, Rust, CS, SA:MP, GMOD, Minecraft, Source Query, etc.
    Downloads: 8 This Week
    Last Update:
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  • 7

    GoBangGame

    A small chinese game written in java

    Downloads: 9 This Week
    Last Update:
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  • 8
    jTarot is a tarot personal advisor. jTarot will do a "reading" for you when you need advice. A reading displays a number of cards and then describes what these cards mean. You take the reading and apply the meanings of the cards to your situation.
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    Downloads: 3 This Week
    Last Update:
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  • 9
    HTLiveSight

    HTLiveSight

    HTLS is an Hattrick live match viewer, based on the old Livefox.

    With HTLiveSight, you can view your matches in a new way: you have explanations near the actions, live league table, popups and sound to advise you that something is happening in matches, even if you're doing other things on your pc! You can also add friends, so their matches are automatically added when you launch the program! Now we added the Relive feature, so you can watch your matches even if you're not at home when they're played! This application is a browser plugin and doesn't need any installation: the only requirement is have Mozilla Firefox and Google Chrome (soon Opera, Safari and mobile browsers) installed! So it's compatible with all the operating systems! And there are a lot of new things in development...check out the forum!
    Downloads: 1 This Week
    Last Update:
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  • Smart Business Texting that Generates Pipeline Icon
    Smart Business Texting that Generates Pipeline

    Create and convert pipeline at scale through industry leading SMS campaigns, automation, and conversation management.

    TextUs is the leading text messaging service provider for businesses that want to engage in real-time conversations with customers, leads, employees and candidates. Text messaging is one of the most engaging ways to communicate with customers, candidates, employees and leads. 1:1, two-way messaging encourages response and engagement. Text messages help teams get 10x the response rate over phone and email. Business text messaging has become a more viable form of communication than traditional mediums. The TextUs user experience is intentionally designed to resemble the familiar SMS inbox, allowing users to easily manage contacts, conversations, and campaigns. Work right from your desktop with the TextUs web app or use the Chrome extension alongside your ATS or CRM. Leverage the mobile app for on-the-go sending and responding.
    Learn More
  • 10
    PyCAPGE

    PyCAPGE

    PyCAPGE - Python Classic Adventure Point and Click Game Engine

    PyCAPGE (Python Classic Adventure Point and Click Game Engine) is a versatile, open-source framework designed for creating retro-style 2D graphic adventures using Python and Pygame. Inspired by the golden age of SCUMM games, it features a customizable 9-verb interface and robust inventory management. Key features include a Scene Manager supporting parallax scrolling, walk-behind masks, and depth-based character scaling. It implements intelligent Pathfinding to navigate complex environments automatically. The engine natively supports Multi-Character gameplay, allowing dynamic switching between protagonists. Developers can build rich narratives using the branching Dialogue System and a Cutscene Manager for scripted events. The architecture is data-driven: texts and definitions are separated into YAML files for easy localization. Includes a JSON Save/Load system and debug console.
    Downloads: 2 This Week
    Last Update:
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  • 11
    LSJ-Launcher-v251215

    LSJ-Launcher-v251215

    Lucifer ate the tomcat.

    Lucifer ate the tomcat.. and embbed the more useful registry. and free software utilities.
    Downloads: 1 This Week
    Last Update:
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  • 12
    ArgosFields is a Java/SWT port of famous turn-based stategy game Crimson Fields(http://crimson.seul.org/). Unlike the original game, it will provide full network support, but lack AI opponent(for now at least).
    Downloads: 0 This Week
    Last Update:
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  • 13
    Hollys is a role-playing game player developed with adobe actionscript 3.0. It originally developed in ruby and known as rpgxp. You can play rpgxp games on the web with the Hollys!
    Downloads: 0 This Week
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  • 14
    Rcon Controller for SA:MP

    Rcon Controller for SA:MP

    SA:MP server administration filterscript

    Rcon Controller: a SA:MP server administration tool. aims to provide real-time graphic/console monitoring / Instant managing. developed by CoolGuy.
    Downloads: 0 This Week
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  • 15
    Microsoft Silverlight v2.0 v3.0 Client Visual Studio 2008 Server C++ MS-SQL Database 2000 WEB 2.0 Online Baduk Game Open source www.gBaduk.com services full source
    Downloads: 0 This Week
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  • 16
    Java version of Stellarium.
    Downloads: 0 This Week
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    See Project
  • 17
    Torus is a simple and easy game. The object of Torus is to clear falling toruses by aligning toruses with the same color on one of several protruding pipes (the game concept is similar to Tetris(R)). This game is inspired by Torus for DOS(R).
    Downloads: 0 This Week
    Last Update:
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  • 18
    The internet WeiQi (Go) game server witten completely in Java. The goal of this project is to provide a full feature game server with an internet player ranking database for all the WeiQi fans.
    Downloads: 0 This Week
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  • 19
    Blex is platform-independent SDK. supports video,audio,mouse,keyboard,network,timer.
    Downloads: 0 This Week
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  • 20
    cross-platform game/multimedia development core engine written in C/C++. It supports Windows, OSX, Linux, Xbox360, and PS3, allowing the use of both DirectX 3D and OpenGL. please vist www.enside.net/hydra
    Downloads: 0 This Week
    Last Update:
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  • 21
    The development of an open source Prince Of Persia Level editor for PC, a new game engine and complementary tools.
    Downloads: 0 This Week
    Last Update:
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