freecut

FreeCut is a professional-grade video editor that runs entirely in your browser. Professional video editing, zero installation. Create stunning videos with multi-track editing, keyframe animations, real-time preview, and high-quality exports. Maintained by walterlow on GitHub, where it has earned 2,147 stars from the community.

It's actively developed around open-source, video-editor, react, and is a solid reference for anyone building with these tools.