Moonscraper Chart Editor is a free, open-source authoring tool for creating and editing note charts for Clone Hero and other Guitar Hero–style rhythm games. Developed by Alexander (FireFox) Ong, it features an intuitive timeline interface, waveform-based audio alignment, precise tempo and time signature mapping, and support for multiple difficulties. You can author guitar and bass parts with mechanics such as HOPOs, tap notes, open notes, sustains, star power phrases, and forced notes. The editor includes section and event markers for in-game practice and presentation, flexible snap and grid settings, robust copy/paste tools, and validation to catch common charting issues. It imports and exports standard .chart and .mid formats for broad compatibility and runs on modern desktop platforms. Whether you’re building your first custom or refining advanced charts, Moonscraper streamlines the process from timing sync to final export.
Moonscraper Chart Editor is developed by Alexander (FireFox) Ong. The most popular versions of this product among our users are: 1.4 and 1.5. The name of the program executable file is Moonscraper Chart Editor.exe.
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