The most complete tool for modding, decompiling and unpacking Undertale (and other GameMaker games!)

Source code of the MapServer project. Please submit pull requests to the 'main' branch.

A dictionary for people moving from GM:S to Godot

Modular game engine built with MonoGame, with GMS2-like workflow and advanced level editor

Official deegree repository providing geospatial core libraries, data access and advanced OGC web service implementations

(Spatial) data harmonisation with hale»studio (formerly HUMBOLDT Alignment Editor)

Auto Data Science - Python Library.

Warp is a feature-rich framework for multiplayer games, written in GameMaker and NodeJS (previously GM-Online-Framework)

3D city model viewer for Mac

A functional utility library for GML/GameMaker: Studio - partials, map/reduce and more

Validation of 3D primitives according to the international standard ISO19107

Stetl, Streaming ETL, is a lightweight geospatial processing and ETL framework written in Python.

🎶 GML bindings to the FMOD Studio low-level API for GM:S and GMS2. Can be used in Windows, macOS, and Linux games.

Source Code for a Sonic Fan Game Made in Game Maker Studio

An ImGui wrapper for modern GameMaker

Fan game engine of Sonic SMS Remake

XML schema and Schematron for aviation weather data exchange

GML interpreter

R tools to write, read & validate geographic metadata (OGC/ISO 19110, 19115, 19119, 19136 and 19139)

An okay color management for GameMaker implementing OKLab/OKLCH colors. Generate, convert, gamut map and mix colors properly with visually better results. Also supports RGB, HSV, HSL, Lab, LCH, and other models.