Showing 1052 open source projects for "multiplayer"

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  • 1
    Trystero

    Trystero

    Serverless WebRTC matchmaking for painless P2P

    Serverless WebRTC matchmaking for painless P2P: make any site multiplayer in a few lines. Trystero manages a clandestine courier network that lets your application's users talk directly with one another, encrypted and without a server middleman. To establish a direct peer-to-peer connection with WebRTC, a signalling channel is needed to exchange peer information (SDP). Typically this involves running your own matchmaking server but Trystero abstracts this away for you and offers multiple "serverless" strategies for connecting peers (currently BitTorrent, Firebase, and IPFS).
    Downloads: 4 This Week
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  • 2
    Zed

    Zed

    High-performance, multiplayer code editor from the creators of Atom

    Zed is a next-generation code editor designed for high-performance collaboration with humans and AI. Written from scratch in Rust to efficiently leverage multiple CPU cores and your GPU. Integrate upcoming LLMs into your workflow to generate, transform, and analyze code. Chat with teammates, write notes together, and share your screen and project. Multibuffers compose excerpts from across the codebase in one editable surface. Evaluate code inline via Jupyter runtimes and collaboratively edit...
    Downloads: 31 This Week
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  • 3
    SteelMC

    SteelMC

    A Minecraft server in Rust focused on a strong foundation

    ...Gameplay updates remain synchronous, while chunk generation, lighting, packet processing, and chunk transmission can run outside the main server tick. Players can join persistent multiplayer worlds, move, interact with blocks, manage inventories, use commands, chat, and return to previously saved areas. Its networking layer supports Java Edition authentication, encryption, compression, and protocol communication. World generation is currently its most complete system and is tested against reproducible vanilla chunks for block-level parity. ...
    Downloads: 12 This Week
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  • 4
    Librelancer

    Librelancer

    A re-implementation of Freelancer

    Librelancer is an open-source reimplementation of the engine behind Freelancer, the iconic 2003 space trading and combat simulation game by Microsoft. Written in C# and powered by OpenGL and modern game development practices, Librelancer faithfully replicates the original gameplay while providing a flexible codebase for modding, analysis, and future enhancements. It supports original assets and is designed to be both a preservation project and a foundation for new space simulation games...
    Downloads: 4 This Week
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  • 5
    Ancient Beast

    Ancient Beast

    The Turn Based Strategy Game/eSport. Master your beasts

    Ancient Beast is a turn-based strategy indie game project played online against other people featuring a wide variety of creatures to acquire, putting them to use in order to defeat your opponents. This project was carefully designed to be easy to learn, fun to play and hard to master. We hope you'll enjoy it. The game takes place in a dystopian future, where people have excelled in power thanks to the use of technology, specifically advanced 3d printers. The world is split into 7 factions,...
    Downloads: 9 This Week
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  • 6
    Factorio

    Factorio

    Factorio headless server in a Docker container

    ...Factorio is a factory-building simulation game in which players automate production lines, research technologies, and manage complex industrial systems, and the repository focuses specifically on hosting the game server in a containerized environment. By packaging the server into a Docker image, the project simplifies the process of deploying and maintaining multiplayer servers across different operating systems and cloud environments. The container automatically handles dependencies, configuration, and updates, making it easier for system administrators and hobbyists to run dedicated Factorio servers. Users can configure server settings, maps, mods, and saved games through mounted volumes and environment variables within the container.
    Downloads: 6 This Week
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  • 7
    Minestom

    Minestom

    1.21.11 Lightweight Minecraft server

    Minestom is an open-source Minecraft server development framework that allows developers to build custom Minecraft server software from scratch without relying on Mojang’s original server code. Instead of functioning as a traditional server implementation, Minestom acts as a lightweight library that provides the core networking and gameplay infrastructure needed to create Minecraft server applications. Developers can use it to design custom game modes, experimental server architectures, or...
    Downloads: 6 This Week
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  • 8
    Widelands

    Widelands

    Widelands is a free, open source real-time strategy game

    Widelands is a free, open-source real-time strategy game with single-player campaigns and a multiplayer mode. The game was inspired by Settlers II™ (© Bluebyte) but has significantly more variety and depth to it. Still, it is easy to get started through playable tutorials. In Widelands, you are the regent of a small clan. You start out with nothing but your headquarters, where all your resources are stored. In the course of the game, you will build an ever growing settlement.
    Downloads: 10 This Week
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  • 9
    Better Stack JavaScript client

    Better Stack JavaScript client

    Better Stack JavaScript client

    ...Search all your logs anytime. See what metrics your teammates are looking at, comment on note-worthy data spikes and share log fragments with one click. Building a great software is a multiplayer game. Get answers fast with a powerful SQL query builder. No need to learn a new querying language or ask your data analyst.
    Downloads: 8 This Week
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  • 10
    Merlin HTTP/2

    Merlin HTTP/2

    Merlin is a cross-platform post-exploitation HTTP/2 Command

    ...The command-line interface only works great if it will be used by a single operator at a time. The Merlin agent can be controlled through Mythic, which features a web-based user interface that enables multiplayer support, and a slew of other features inherent to the project.
    Downloads: 8 This Week
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  • 11
    JanusWeb

    JanusWeb

    An in-browser implementation of JanusVR

    ...JanusXR turns any webpage into its own three-dimensional space where users can meet and explore with others. Host content on the open web and customize Janus' open-source multiplayer server to fit your needs. VESTA is JanusXR's user-driven community. Post your own spaces and get feedback from other community members! The built-in editor allows users to join together to create content in real-time. JanusWeb's widget generator allows you to embed a 3D WebVR portal to your webspace into any 2D webpage. With the JanusXR Youtube translator, watching videos with friends is a walk in the park. ...
    Downloads: 8 This Week
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  • 12
    CrowdSec

    CrowdSec

    Firewall able to analyze visitor behavior & provide adapted response

    CrowdSec - an open-source massively multiplayer firewall able to analyze visitor behavior & provide an adapted response to all kinds of attacks. It also leverages the crowd power to generate a global IP reputation database to protect the user network. Crowdsec shouldn't, and didn't crash any production so far we know, but some features might be missing or undergo evolutions.
    Downloads: 8 This Week
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  • 13
    mpai

    mpai

    Make Codex and Claude Code sessions multiplayer from the terminal

    mpai is an open-source coordination layer that makes AI coding sessions collaborative directly from the terminal. It lets a named teammate enter an existing Codex or Claude Code conversation without switching tools or recreating its context. The host explicitly chooses which native sessions to share, while Tailscale provides the private device network. Teammates can follow live transcripts, switch sessions, show presence, and submit prompts with their identity attached. Viewer and...
    Downloads: 2 This Week
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  • 14
    Luck Perms

    Luck Perms

    A permissions plugin for Minecraft servers

    ...The plugin provides a flexible system for creating user groups, assigning permissions, and defining roles that determine access to commands, features, and gameplay mechanics. Designed for performance and scalability, LuckPerms can handle large multiplayer servers and complex permission hierarchies while maintaining fast response times. Administrators can configure permissions using command-line tools, configuration files, or a web-based editor that simplifies management of large permission systems. The plugin also supports multiple storage backends such as local files, SQL databases, and other data systems, allowing server networks to synchronize permissions across multiple servers.
    Downloads: 2 This Week
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  • 15
    Mudlet

    Mudlet

    Cross-platform, open source, and super fast MUD client with scripting

    Play immersive, multiplayer, pure-text games on Mudlet. Performance defined Mudlet from its birth. The custom text display and the Lua-powered scripting system will handle the biggest raids without issues. Mudlet’s entire user interface is designed to be modded – from the space within the window to the look and feel of the client itself. Make yourself a beautiful portal to your text world.
    Downloads: 6 This Week
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  • 16
    quadplay

    quadplay

    The quadplay fantasy console

    ...Play your games in any modern web browser on a laptop, desktop, tablet, phone, Raspberry Pi 4, or Jetson Nano. 60 fps @ 384 x 224 pixels = 12:7 aspect ≈ 16:9.3. 4096 sRGB (4:4:4) colors. Four players with virtual controls for D-pad and eight buttons. Local and safe online multiplayer. Supports Xbox, Playstation, SNES, Stadia, Switch, 8bitdo, touch screen, and other controllers. Hundreds of built-in sprites, sounds, and fonts. Program in PyxlScript, a friendly Python-like language. Order-independent, 4-bit alpha transparency. Native 2.5D graphics with z-order.
    Downloads: 4 This Week
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  • 17
    Centrifuge

    Centrifuge

    Real-time messaging library for Go with scalability in mind

    ...It's a general-purpose real-time messaging library for Go programming language. Real-time messaging can help create interactive applications where events are delivered to online users with minimal delay. Chats apps, live comments, multiplayer games, real-time data visualizations, collaborative tools, etc. can all be built on top of Centrifuge library. The library is built on top of efficient client-server protocol schema and exposes various real-time oriented primitives for a developer.
    Downloads: 6 This Week
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  • 18
    LÖVR

    LÖVR

    Lua Virtual Reality engine

    ...Writen in C99 and scripted with LuaJIT, includes optimized single-pass stereo rendering. Out of the box you get fast stereo rendering, VR controllers, hand tracking, haptics, spatial audio, 3D physics, PBR materials, SDF fonts, multiplayer, and more. The entire engine is 1MB and runs on LuaJIT, the fastest JIT compiler round these parts. Projects are just folders with scripts and assets in them, organized however you want.
    Downloads: 4 This Week
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  • 19
    openage

    openage

    Open source clone of the Age of Empires II engine

    ...Using modern technologies as C++17, OpenGL/GLSL, Python, Qt5 and CMake allows people using GNU/Linux, BSD, macOS or Windows to play the game natively. Our aim is to make openage a platform for the original Age of Empires games providing the same look and feel, but with more features for modding and multiplayer. openage uses an open API powered by our human-readable configuration language nyan. We implement a client-server architecture with dedicated servers that supports more than 8 players. The overarching system will provide matchmaking, lobbies, server discovery and other community features. openage is a community project that values every contribution, the only requirement is your enthusiasm. ...
    Downloads: 1 This Week
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  • 20
    libdatachannel

    libdatachannel

    C/C++ WebRTC network library featuring Data Channels, Media Transport

    libdatachannel is a C++ library that implements WebRTC DataChannels and ICE transports, enabling peer-to-peer communication without relying on media components. It is ideal for developers who want efficient, low-latency P2P communication for data transmission in IoT, multiplayer games, decentralized apps, or custom signaling architectures. Built for performance and minimalism, it allows fine-grained control over STUN, TURN, DTLS, and SCTP layers, with a clean and modern C++ interface.
    Downloads: 0 This Week
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  • 21
    FerrumC

    FerrumC

    A reimplementation of the minecraft server in rust

    ...By using Rust’s concurrency and safety guarantees, FerrumC runs fully multithreaded, allowing it to utilize all available CPU cores — which helps deliver smoother, low-latency, high-throughput multiplayer experiences. The project aims both at providing a fast, lean server for typical use (friends or small communities) and offering a foundation that could support large-scale servers, mod/plugin systems, and custom server configurations. FerrumC supports importing existing Minecraft worlds, making it easy for users to migrate from standard servers without losing progress. ...
    Downloads: 3 This Week
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  • 22
    Java Telegram Bot API

    Java Telegram Bot API

    Telegram Bot API for Java

    ...A bot can offer paid services or work as a virtual storefront. Create custom tools. A bot may provide you with alerts, weather forecasts, translations, formatting or other services. Build single- and multiplayer games. A bot can offer rich HTML5 experiences, from simple arcades and puzzles to 3D-shooters and real-time strategy games. Build social services. A bot could connect people looking for conversation partners based on common interests or proximity.
    Downloads: 2 This Week
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  • 23
    Melody

    Melody

    Minimalist websocket framework for Go

    ...It is designed to make real-time server features easier to build without requiring a large framework or complex setup. Developers can use it for chat systems, live notifications, dashboards, multiplayer coordination, collaborative tools, and other bidirectional communication features. Melody provides connection lifecycle hooks, message handlers, broadcasting, session management, and grouped communication patterns. It is built to feel familiar to Go developers and can be integrated into existing HTTP applications. The project is especially useful when a team needs straightforward WebSocket behavior without building connection handling and broadcast logic from scratch.
    Downloads: 0 This Week
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  • 24
    python-socketio

    python-socketio

    Python Socket.IO server and client

    ...It supports key Socket.IO features like event handling, message broadcasting, binary data transmission, rooms, and namespaces, giving developers the building blocks to create chat applications, live dashboards, multiplayer games, and collaborative tools.
    Downloads: 0 This Week
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  • 25
    Kanwas

    Kanwas

    Shared context board for teams and agents

    ...The platform supports real-time collaboration, visible agent tool calls, and a timeline that makes AI activity easier to follow and audit. It is designed for long-running projects where maintaining context matters as much as producing a single response. Overall, Kanwas positions itself as a multiplayer thinking space for AI-assisted research, planning, and execution.
    Downloads: 0 This Week
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