Showing 185 open source projects for "open core"

View related business solutions
  • $300 Free Credits for Your Google Cloud Projects Icon
    $300 Free Credits for Your Google Cloud Projects

    Start building on Google Cloud with $300 in free credits. No commitment, no credit card required until you're ready to scale.

    Launch your next project with $300 in free Google Cloud credits—no strings attached. Test, build, and deploy without risk. Use your credits across the entire Google Cloud platform to find what works best for your needs. After your credits are used, continue with always-free tier services. Only pay when you're ready to scale. Sign up in minutes and start exploring.
    Start Free Trial
  • 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.

    You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.
    Try free now
  • 1
    modrinth

    modrinth

    The Modrinth monorepo containing all code which powers Modrinth

    modrinth is the primary open-source monolithic repository that contains the backend, web interface, and core infrastructure powering the Modrinth mod distribution platform. The project consolidates the codebase used to operate the Modrinth website, its APIs, and related services that allow users to discover, publish, and manage Minecraft mods, plugins, and modpacks.
    Downloads: 99 This Week
    Last Update:
    See Project
  • 2
    Retro Bowl

    Retro Bowl

    Retro Bowl is an American football game in retro style

    Retro Bowl is an open-source recreation and enhancement project inspired by the popular Retro Bowl American football game, designed to run as a lightweight, accessible implementation that captures the core gameplay loop of team management and arcade-style football. The project focuses on delivering a simplified yet engaging sports simulation where players take on the role of both coach and general manager, making decisions about roster management, player upgrades, and in-game strategy. ...
    Downloads: 21 This Week
    Last Update:
    See Project
  • 3
    Pygame

    Pygame

    Set of Python modules designed for writing video games

    Pygame is a Free and Open Source python programming language library for making multimedia applications like games built on top of the excellent SDL library. Like SDL, pygame is highly portable and runs on nearly every platform and operating system.
    Downloads: 94 This Week
    Last Update:
    See Project
  • 4
    Cocos Engine

    Cocos Engine

    Cocos simplifies game creation and distribution with Cocos Creator

    The Cocos Engine repository powers the open-source core of Cocos Creator, a cross-platform game engine and editor designed for building 2D and 3D games for web and native targets. It aims to simplify game creation and distribution, with support for high-performance rendering, physics, scene management, asset pipelines, and more. The engine is built using a mix of C++ (for performance-critical systems) and TypeScript/JavaScript (for scripting), enabling developers to script game logic while relying on a robust, high-performance core. ...
    Downloads: 12 This Week
    Last Update:
    See Project
  • Stop vibe-debugging. Icon
    Stop vibe-debugging.

    Plug Claude into your app's actual errors.

    AppSignal's MCP server hands Claude, Cursor, or Zed your real errors, traces, and the deploy that shipped them. AI writes the fix; you review the diff.
    Free 30 days.
  • 5
    Funkin

    Funkin

    A rhythm game made with HaxeFlixel

    ...In the core game loop, players navigate a story across multiple weeks with unique songs and characters, and the engine handles input timing, score calculation, and animated feedback in sync with background music. Because it’s open source, the community has created an expansive ecosystem of mods, new songs, and custom charts that extend replayability far beyond the base content.
    Downloads: 92 This Week
    Last Update:
    See Project
  • 6
    ClassicUO

    ClassicUO

    An open source implementation of the Ultima Online Classic Client

    ClassicUO is an open-source, modern client for Ultima Online, a beloved MMORPG originally released in the late 1990s. Designed as a drop-in replacement for outdated clients, ClassicUO supports high performance, modding, and quality-of-life improvements while preserving the game's core look and mechanics. It’s built using .NET Core and runs cross-platform, offering smoother input, faster rendering, and extensibility for private servers.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 7
    Unciv

    Unciv

    Open-source Android/Desktop remake of Civ V

    Unciv is an open-source reimplementation of the game Civilization V in Java using LibGDX. It focuses on replicating the core gameplay mechanics in a lightweight, mobile- and desktop-friendly format, supporting both single-player and multiplayer modes. Unciv uses a minimalist art style and text-based UI to deliver a fast, turn-based strategy experience.
    Downloads: 23 This Week
    Last Update:
    See Project
  • 8
    Luanti

    Luanti

    Voxel game-creation platform with easy modding and game creation

    Luanti, originally known as Minetest, is a free, open-source voxel game engine and platform designed to let players, modders, and developers build and play diverse sandbox-style 3D worlds. Written in C++ for core performance and Lua for scripting, Luanti runs on multiple operating systems (Windows, macOS, Linux, BSD variants and even Android), making it highly accessible and cross-platform.
    Downloads: 17 This Week
    Last Update:
    See Project
  • 9
    Multi Theft Auto: San Andreas

    Multi Theft Auto: San Andreas

    Multi Theft Auto is a game engine

    Multi Theft Auto (MTA) is a software project that adds network play functionality to Rockstar North's Grand Theft Auto game series, in which this functionality is not originally found. It is a unique modification that incorporates an extendable network play element into a proprietary commercial single-player PC game. Multi Theft Auto is based on code injection and hooking techniques whereby the game is manipulated without altering any original files supplied with the game. The software...
    Downloads: 138 This Week
    Last Update:
    See Project
  • Ship Agents Faster Icon
    Ship Agents Faster

    Transform your applications and workflows into powerful agentic systems at global scale.

    Gemini Enterprise Agent Platform lets you rapidly build, scale, govern and optimize production-ready agents grounded in your organization's data. The platform enables developers to build custom or pre-built agents for virtually any use case. New customers get $300 in free credits.
    Get Started Free
  • 10
    Jolt Physics

    Jolt Physics

    A multi core friendly rigid body physics and collision detection lib

    A multi core friendly rigid body physics and collision detection library suitable for games and VR applications, used by Horizon Forbidden West. So why create yet another physics engine? First of all, this has been a personal learning project and secondly I wanted to address some issues that I had with existing physics engines. In games we usually need to do many more things than to simulate the physics world and we need to do this across multiple threads. We therefore place a lot of...
    Downloads: 3 This Week
    Last Update:
    See Project
  • 11
    Pumpkin

    Pumpkin

    Empowering everyone to host fast and efficient Minecraft servers

    Pumpkin is an open-source Minecraft server implementation written entirely in the Rust programming language with the goal of delivering high performance, efficiency, and modern architecture for hosting multiplayer worlds. Unlike the original Java-based server, Pumpkin focuses on leveraging Rust’s memory safety and performance advantages to create a fast and stable server environment.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 12
    October

    October

    Self-hosted CMS platform based on the Laravel PHP Framework

    ...We want to turn you around to the simpler side and get back to basics. October's mission is to show the world that web development is not rocket science. October is open source but it is not free software. A license with a small fee is required for each website you build with October CMS. The best place to learn October CMS is by reading the documentation or following some tutorials. October CMS was engineered to be easy — for both developers and users. At its core, we’ve used long-standing programming principles to create a brilliantly simple CMS that makes web development easier.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 13
    Decky Loader

    Decky Loader

    A plugin loader for the Steam Deck

    Decky Loader is a homebrew plugin launcher built for the Steam Deck that enables users to extend and customize the console’s functionality through a dynamic plugin ecosystem integrated directly into the SteamOS interface. It acts as a middleware layer that injects and manages plugins, allowing deep customization such as modifying UI elements, changing system sounds, adjusting display properties, and extending system behavior beyond stock capabilities. The platform is designed to persist...
    Downloads: 31 This Week
    Last Update:
    See Project
  • 14
    Babylon.js

    Babylon.js

    Open game and rendering engine packed into a JavaScript framework

    ...The core focus of Babylon.js 4.2 has been around simplicity. While Babylon.js keeps its code-first approach, we’ve added many tools in the Inspector and enhanced the Node Material Editor to save time to developers and Tech Artists. With the Particle Editor, you can now create and configure particle systems with the click of the mouse.
    Downloads: 61 This Week
    Last Update:
    See Project
  • 15
    r2modman

    r2modman

    A simple and easy to use mod manager for several games

    ...The tool supports multiple popular mod-heavy games such as Risk of Rain 2, Valheim, GTFO, and others, making it a central hub for Thunderstore-based modding workflows. One of its core strengths is the profile system, which lets users maintain separate mod configurations for different play styles or multiplayer compatibility.
    Downloads: 22 This Week
    Last Update:
    See Project
  • 16
    GLSMAC

    GLSMAC

    Open-source OpenGL/SDL2 reimplementation of Sid Meier's Alpha Centauri

    glsmac is a compact C99 library designed to simplify OpenGL development on macOS by creating a minimal, no-dependency window and OpenGL context setup. It uses only macOS's native APIs (Cocoa and Core OpenGL) without relying on third-party frameworks like GLFW or SDL. This makes it ideal for developers who want tight control over their OpenGL projects, need a lightweight setup for demos or testing, or are writing small graphical utilities without overhead. The code is short, self-contained,...
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    Redot Engine

    Redot Engine

    Multi-platform 2D and 3D game engine

    ...Because it’s open-source, Redot-Engine is potentially community-driven, allowing anyone to inspect, extend, or customize core functionalities. Its modularity and open nature make it attractive for indie developers or hobbyists who want to avoid heavyweight engines with lots of built-in assumptions. Even if the engine may not yet rival more mature engines in features or polish, its openness and design philosophy can offer an appealing balance between simplicity and flexibility.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 18
    hematite

    hematite

    A simple Minecraft written in Rust with the Piston game engine

    ...Hematite aims to replicate core elements of Minecraft’s mechanics while leveraging Rust’s safety guarantees and modern performance capabilities. The project also explores the possibility of building alternative server implementations or game engines compatible with Minecraft-style gameplay. By rewriting core systems in Rust, the developers hope to create a more efficient and flexible architecture compared with the original Java-based implementation.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 19
    Solar2D Game Engine

    Solar2D Game Engine

    Solar2D Game Engine main repository (ex Corona SDK)

    This is a fully open source project that is forked of the well-established and widely used Corona SDK game engine, which is no longer commercially supported. Development is lead by Vlad Shcherban, former technical lead engineer at Corona Labs Inc. If you are using this engine, consider supporting its development. Develop for mobile, desktop, and connected TV devices with just one code base: iOS, tvOS, Android, Android TV, macOS, Windows, Linux, or HTML5.
    Downloads: 14 This Week
    Last Update:
    See Project
  • 20
    ArchiSteamFarm

    ArchiSteamFarm

    C# application with primary purpose of farming Steam cards

    ASF is a C# application with the primary purpose of farming Steam cards from multiple accounts simultaneously. Unlike Idle Master which works only for one account at a given time, while requiring Steam client running in the background and launching additional processes imitating "game-playing" status, ASF doesn't require any Steam client running in the background, doesn't launch any additional processes and is made to handle unlimited Steam accounts at once. In addition to that, it's meant...
    Downloads: 22 This Week
    Last Update:
    See Project
  • 21
    AzerothCore

    AzerothCore

    Complete Open Source and Modular solution for MMO

    AzerothCore is a fully open-source MMORPG server framework designed to recreate the gameplay experience of World of Warcraft’s Wrath of the Lich King expansion in a customizable and self-hosted environment. It is written primarily in C++ and provides a complete backend infrastructure for running private game servers, including world simulation, player interaction, combat systems, and database-driven content.
    Downloads: 8 This Week
    Last Update:
    See Project
  • 22
    Steamodded

    Steamodded

    A Balatro Modding Framework

    Steamodded, also known as Steamodded, is a modding framework and loader specifically designed for the game Balatro, enabling users to inject and manage custom modifications. Built using Lua, it provides a flexible and extensible environment that allows developers to create new gameplay features, mechanics, and enhancements. The framework includes a variety of APIs that simplify the process of interacting with the game’s internal systems, making mod development more accessible. It is...
    Downloads: 8 This Week
    Last Update:
    See Project
  • 23
    AlphaZero.jl

    AlphaZero.jl

    A generic, simple and fast implementation of Deepmind's AlphaZero

    Beyond its much publicized success in attaining superhuman level at games such as Chess and Go, DeepMind's AlphaZero algorithm illustrates a more general methodology of combining learning and search to explore large combinatorial spaces effectively. We believe that this methodology can have exciting applications in many different research areas. Because AlphaZero is resource-hungry, successful open-source implementations (such as Leela Zero) are written in low-level languages (such as C++)...
    Downloads: 15 This Week
    Last Update:
    See Project
  • 24
    ThinkPHP

    ThinkPHP

    ThinkPHP Framework

    ...More powerful and easy-to-use queries. Brand new event system. Model events and database events are unified into the event system. Template engine separates out the core. Middleware for internal functions. SESSION/Cookie mechanism improvement. Improved support for Swoole and coroutines. More friendly to IDE. Unify and streamline a large number of usages. ThinkPHP is released under the Apache2 open source agreement and is available for free.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 25
    HaxeFlixel

    HaxeFlixel

    Free, cross-platform 2D game engine powered by Haxe and OpenFL

    ...It includes common utilities and abstractions for sprites, animations, input handling, game loops, asset management, and state transitions, making it easier to build a complete game without reinventing core infrastructure. Because of this, it has been used for successful indie games and prototypes alike, and remains a popular choice among developers.
    Downloads: 8 This Week
    Last Update:
    See Project
  • Previous
  • You're on page 1
  • 2
  • 3
  • 4
  • 5
  • Next
Auth0 Logo