Godot Engine – Multi-platform 2D and 3D game engine

Kaitai Struct: declarative language to generate binary data parsers in C++ / C# / Go / Java / JavaScript / Lua / Nim / Perl / PHP / Python / Ruby / Rust

AGS editor and engine source code

A library for creating, reading and editing PE files and .NET modules.

LimboAI - Behavior Trees and State Machines for Godot 4

A dockerized Phoenix development and runtime environment.

A 2D Terrain Tool for Godot

Godot engine addon to randomly fill an area with props or other scenes

Google Chrome, Firefox, and Thunderbird extension that lets you write email in Markdown and render it before sending.

A collection of systems and macros for Twine.

Adds a dropdown and refresh button combo to the toolbar for instantly toggling off/on a plugin. Enables faster workflows for Godot plugin developers.

SharpShell makes it easy to create Windows Shell Extensions using the .NET Framework.

Plugin for Petz (Dogz and Catz) and Babyz games

A virtual pet game about raising bunbons in space.

GUI and API library to work with Engine assets, serialized and bundle files

A tool to help placing lots of environment props in a scene

Parse .scp files from the Petz line of games

A simple pseudo 3D raycasting engine in Kotlin-JS

Details on decoding files from the Petz/Dogz/Catz/Babyz set of games

Plugin for Petz (Dogz and Catz) and Babyz games