gdscript-online.github.io
Try out GDScript without installing Godot
GDScript Online, a browser editor without the install
An online runtime for playing with GDScript when you cannot or will not install Godot, with separate versions targeting Godot 4.x and Godot 3.x.
GDScript in the browser
GDScript Online is an online GDScript runtime environment. The main use case, per the README, is to play around with GDScript without needing to install Godot, which is especially useful on a PC where you cannot run executables downloaded from the web. The editor is hosted on GitHub Pages, with two versions offered: Godot 4.x at the main site, marked as recommended, and Godot 3.x at a separate path on the same domain. Choosing a version is really choosing which language release you are targeting, and the README makes the recommendation explicit.
What it is not
The limitations section is refreshingly blunt. This is only a minimal script editor for quick testing purposes, built to start up quickly and use few resources. Anyone looking for the full Godot editor in the browser is pointed to the official Godot Engine Web Editor. So the scope is deliberately small, and the README sets that expectation up front rather than letting you discover it later. For quick syntax checks and short scripts it is exactly the right size.
Where you can run it
The README points to two live locations under the same domain: the Godot 4.x version as the main, recommended route, and a Godot 3.x version at a separate path for the older language release. Both run in the browser, which is the whole point of the project. If the goal is a quick test of GDScript syntax without a local editor, either version gets you there, and the 4.x line is the one the README suggests first.
Licensing
Unless otherwise specified, files in the repository are MIT licensed, with details in LICENSE.md. The one exception called out is the JetBrains Mono font, which is licensed under the SIL OFL 1.1 and has its own license file under the fonts directory. Both license files are referenced in the repository, so the code terms and the font terms can be checked separately. It is a small, clearly documented licensing setup for a small project.
Community notes