GMEdit is a high-end, open-source code editor for GameMaker.
It represents what I consider to be the most important when working with code - being able to edit code quickly and comfortably, with features expected from a modern day code editor and conventional tabbed document design.
Rough lineup of features:
Overall, it can be viewed as a more pleasant alternative to GameMaker's base IDE, and becomes increasingly more advantageous the more code you write or the more complex your code gets.
By design it is something that you run alongside the base IDE, but there are ways you can avoid switching back and forth to run the game.
NEW! Try GMEdit online!
This web-based version has some limitations compared to the downloadable one, but can give you a general idea of what GMEdit can do, and can also be used to open GameMaker projects without installing anything!
Maintained by: YellowAfterlife
Stable binaries can be found on itch.io.
Same page also houses screenshots and development log.
Download a pre-built 18.x Electron binary
and extract the files into bin/ directory (so that you have bin/electron.exe on Windows or bin/electron on Mac/Linux).
You can find which exact version GMEdit is using by evaluating process.versions.electron in the JS console (Ctrl+Shift+I).
Alternatively, extract an existing GMEdit Beta to bin/ without replacing files.
Build the project via
haxe build.hxml,
npm run compile, or open and run the included FlashDevelop/HaxeDevelop project.
You'll need a current version of Haxe installed.
npm start or just run the according Electron binary in bin/.