FreeMoCap vs OpenCap
FreeMoCap
freemocap.orgOpenCap
opencap.aiSide by side
| Figure | FreeMoCap | OpenCap |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | Yes | — |
| Web | — | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| iOS | — | Yes |
| API | Yes | — |
| Self-hosted | Yes | — |
| Plans published | 2 | 1 |
| Spec score · Motion Capture Software | 8.8 (#5) | 7.5 (#25) |
| Outputs | Exports include CSV, FBX and Blender .blend files, with additional NumPy and Parquet data documented. | The platform provides joint angles, moments, and muscle forces through musculoskeletal dynamics. |
| Support | Community support is centered on Discord, with GitHub issues for bugs and feature requests and paid setup, training and custom services available. | The contact page directs technical questions to the multi-camera or monocular forums before emailing and says Android is not supported. |
Plans
In their own words
FreeMoCap
FreeMoCap records and reconstructs full-body movement as 3D motion-capture data. It is free, open-source software for researchers, animators, athletes, and creators. Capture can use two or more standard webcams, GoPros, or smartphones; a printed ChArUco board synchronizes camera feeds and defines the 3D coordinate system. Users can also record video offline on mobile devices and import it later for processing. Results can be exported in formats including CSV, FBX, and .blend files. A Blender add-on loads processed recordings into Blender as a rigged skeleton. Processing happens locally, and the homepage says video data does not leave the user's machine. A backend server download supports headless machines, remote capture rigs, and API use. The download page identifies the current release as alpha. Optional anonymous usage pings may include IP address, timestamp, and camera information, but users can disable them in the GUI. The project directs questions to Discord and bug reports or feature requests to GitHub. Its post-hoc guide notes that RTMPose produces 3D data but does not currently have working Blender export.