Software

Web application for conducting a quiz, including a page for players to enter their answers

Arena first-person shooter similar to Unreal Tournament. ([Source Code](https://github.com/redeclipse/base))

A web-based pictionary game. ([Demo](https://scribblers.fly.dev))

An open-source 2D battle royale game inspired by surviv.io. ([Demo](https://suroi.io/), [Source Code](https://github.com/HasangerGames/suroi))

The Battle for Wesnoth is an Open Source, turn-based tactical strategy game with a high fantasy theme, featuring both singleplayer and online/hotseat multiplayer combat

Multiplayer RPG. Open-source game inspired by Cube World, Legend of Zelda, Dwarf Fortress and Minecraft. ([Source Code](https://gitlab.com/veloren/veloren))

Wordle clone. A Mastermind-like game, but instead of colors you need to guess words. ([Demo](https://word-mastermind.glitch.me/))

Open Source on Springrts engine. Zero-K is a traditional real time strategy game with a focus on player creativity through terrain manipulation, physics, and a large roster of unique units - all while being balanced to support competitive play. ([Source Code](https://github.com/ZeroK-RTS/Zero-K))

Cross-platform Minecraft server manager. ([Source Code](https://github.com/macarooni-man/auto-mcs))

Minecraft launcher and manager that allows users to start and administer Minecraft servers from a user-friendly interface. ([Source Code](https://gitlab.com/crafty-controller/crafty-4))

Game distribution platform, designed for distributing and sharing DRM-free games efficiently (alternative to Steam, GameVault). ([Source Code](https://github.com/Drop-OSS/drop), [Clients](https://github.com/Drop-OSS/drop-app))

Easy-Wi is a Web-interface that allows you to manage server daemons like gameservers. In addition it provides you with a CMS which includes a fully automated game- and voiceserver lending service. ([Source Code](https://github.com/easy-wi/developer/))

Video game library manager with automatic scanning, web access, downloads, and plugin support. ([Source Code](https://github.com/gameyfin/gameyfin))

CLI tool for deployment and management of dedicated game servers on Linux: more than 120 games are supported. ([Source Code](https://github.com/GameServerManagers/LinuxGSM))

Sync games and save files across multiple devices. ([Source Code](https://github.com/Accessory/minus_games))

Web application for easy management of game servers, offering a user-friendly interface for deploying, configuring, and managing servers, server monitoring tools, and extensive customization options (fork of Pterodactyl). ([Source Code](https://github.com/pelican-dev/panel))

Management panel for game servers, with an intuitive UI for end users. ([Source Code](https://github.com/pterodactyl/panel))

Game server management panel designed for both small networks and game server providers. ([Source Code](https://github.com/pufferpanel/pufferpanel))

CLI for executing queries on a remote Valve Source dedicated server using the RCON Protocol

Private cloud game library distribution server + frontend/launcher

Admin, ban, and communication management system for games running on the Source engine. ([Source Code](https://github.com/sbpp/sourcebans-pp))

Remote game stream host for Moonlight with support up to 120 frames per second and 4K resolution. ([Source Code](https://github.com/LizardByte/Sunshine))

Genealogy tool designed with privacy in mind that anyone can use to author or edit their family tree. Data is stored in the GEDCOM format and all processing is done in the browser. ([Source Code](https://github.com/genea-app/genea-app))

Record family members and their relationships and build a family tree. ([Demo](https://genealogy.kreaweb.be/), [Source Code](https://github.com/MGeurts/genealogy))