You might know me from my commerical work or one of the talks I gave, but I spend my free time making libraries to help developers.

GML is something of a quirky language and has led me to evolve particular techniques to establish a personal "best practice". You can read some of my thoughts on the nuances of developing in GameMaker here.

 

The Jujuverse The most popular libraries, all in one place
	Scribble Deluxe Powerful, fully featured text renderer		Input Comprehensive cross-platform input Now maintained by offalynne
	Scribble Jr. Fast and lightweight text renderer		Vinyl Live updating modular audio system
	SNAP Struct and array export/import and utilities		Chatterbox Narrative scripting tool
	Dynamo Dynamic data loading		Snitch Logging and crash handling system
	iota Miniature fixed timestep library		Bulb 2D lighting and shadows
	Texan Texture group manager		DoLater call_later but with arguments
	Clean Shapes Antialiased primitive drawing		db Simple savedata database

 

Other stuff you might like too:

dotobj Comprehensive .obj importer	Cardboard Z-tilt / isometric 3D rendering
Elephant Advanced struct/array serialization	Coroutines Asynchronous functions for GameMaker
Shockwaves Shader-based ripple distortion	Kawase Blur Kawase dual filter blur
LUT Commonly used for colour grading	A Message from Amalthea Procedural audio toy
Quaternions Simple quaternion library	Matrices Matrix manipulation functions
Sphinx Simple encryption	HMAC-Secured Savedata Featured on the YoYoGames tech blog
Reddit / YouTube OAuth frameworks for social networks	Google Analytics Google's Measurement Protocol v4
gl_FragDepth How to enable gl_FragDepth in GLSL ES	BIG Integers Big integer handling
Extending JSON Experimental JSON-like data formats	PRNG PRNG functions
Ugg 3D primitives	Splat Vertex buffer-based sprite caching