11 open-source projects similar to bscotch/olympus, ranked by shared indexed features. Tags may describe platforms or build tools rather than the same primary purpose. Check each project’s use case, license, and deployment requirements before treating it as a replacement.
Unit testing framework built in GML for GameMaker LTS
rt-shell, or run-time shell an easy-to-use, customizable, and extensible cheat/debug console for GameMaker Studio 2.3+.
Lookout is a compact Free and Open Source GameMaker library offering a variety of Debug Overlay views for identifying common but often hard-to-diagnose problems.
Logging and crash handling system for GameMaker LTS 2026
Erlang term explorer. Pastebin type app which displays terms of any complexity straight from your erlang shell in web browser. No external deps (inets only).
A GameMaker 2.3 extension that allows for runtime asset inspection, intended to fill in the gaps for asset-related functions that might be missing. This extension is still heavily in development and is subject to changes and additions. Additionally, due to the nature of this extension; runtime…
Unit Testing Framework for Gamemaker Studio 2.3+
A library for easily creating GameMaker debug views