GML Script Wizard
Quickly write GML script boilerplate code and documentation
RouteVN Creator | Visual Novel Engine
Free and open source application for making Visual Novels without any coding
SnapGML
Scratch-like GameMaker Language visual coding
Tile Crusher
A small utility to work with spritesheets and tilesheets. Easily split or combine images
Picross Canvas
Pixel Art and Animation Suite
Xin 1.1 debug demo
Game Maker 8.0 extension debug demo
RayCoaster
Raycaster in C, easy fun.
StoryFlow Easy: Visual Novel Editor
French, English, Spanish, Russian, Italian, Chinese
TheMemer
GMC Jam Theme Solver
Compute 16 Program
Make retro games, music, sprites, and even custom hardware easy!
GMStruct
Generate Structs for GameMaker studio 2
midiranger
easily and simply create soundtracks for your games!
Merchant System for RPG in a Box
A merchant/shop system for RPG in a Box.
Code-to-Bot for Gamemaker: Studio
Converts comments from Gamemaker Projects to be used in cheapbotsdonequick.com Twitter-bots.
CastleDB Cleaner
A single python script that converts CastleDB .cdb file to an easier to use JSON file
DAPPLE
A Simple Game Engine For Beginners and Prototypes.
Noted GML
A free automated JSDoc generator for GameMaker
SpellSide
The new engine. The most powerful and easiest.
Orbis Pixel Pipeline
Batch creation of pixel-art game assets.
VoxPaper
PNG Avatar creator for Mac, Windows and Linux
AuthSaturn
Open Source Authentication tool for Godot using the itch.io API.
turtleSpaces 3D Logo Game Engine
Easily develop 3D games, animations and more using turtleSpaces, a Logo-based development platform
Fio
A real-time liminal Quake-style CSG level editor and game engine. Optimised for mobile CPUs