Sports2D
Sports2D: A free 2D biomechanics tool for extracting pose data and preparing OpenSim or Blender workflows. Ranked #38 of 64 in Motion Capture Software by our editors (5.1/10); pricing: Free plan; best for open-source 2D pose and biomechanics analysis.
At a glance
- Editor score5.1 / 10
- PricingFree plan
- Best forOpen-source 2D pose and biomechanics analysis
- Free planYes
- Paid fromFree
- Character retargetingYes
- Facts checked23 Sep 2026
Where it wins
- Extracts 2D keypoints, joint angles and segment angles from video or webcam
- Supports multi-person tracking, filtering, calibration and real-time display
- Exports biomechanics data for OpenSim and Blender visualization workflows
Where it doesn't
- Focused on 2D analysis rather than broad 3D animation capture
- Full functionality requires local installation; the online version is limited
- Support is centered on community resources and documentation
Our verdict on Sports2D
Sports2D is a free, open-source Python application for extracting 2D human keypoint trajectories from video files or webcams. It calculates joint and segment angles, tracks multiple people and displays results in real time. Filtering, sorting, interpolation, pixel-to-meter conversion and camera calibration support further analysis. The published positioning fits sports analysis, clinical gait assessment and biomechanics research, with suitability for solo users and small or mid-market teams that need an open workflow.
The software is available across Windows, macOS and Linux, with cloud and self-hosted deployment options. Its workflow connects directly with OpenSim for scaling and inverse kinematics and with Blender for visualization. Export formats include TRC, C3D, MOT, OSIM, MP4, PNG, TOML and TXT. Additional processing includes marker augmentation with an LSTM model, while webcam and video-file inputs cover both live and recorded analysis. As open-source software with a free plan, it does not present paid tiers to compare; the practical investment is choosing and maintaining an appropriate installation and workflow.
Sports2D is a focused choice when 2D pose measurement, angle calculation and biomechanics interoperability matter more than a broad animation pipeline. The online Hugging Face version is described as limited, so users seeking the complete feature set should use the local application. Its scope is also primarily 2D rather than general 3D motion-capture production. Community support and documentation provide the stated support channels. Choose Sports2D for transparent, research-oriented 2D analysis and OpenSim or Blender handoffs; consider another tool when full 3D capture or a wider animation ecosystem is the priority.
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Sports2D pricing
Sports2D fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Body tracking | Yes |
| Face and hand tracking | Yes |
| Character retargeting | Yes |
| Cleanup tools | Yes |
| Export formats | TRC, C3D, MOT, OSIM, MP4, PNG, TOML, TXT |
| Real-time output | Yes |
| Supported platforms | Windows, Linux, macOS |
| Deployment | Cloud, Self-hosted |
| Platforms | Web, Windows, macOS, Linux |
| Support | Community, Docs |
| Built for | Solo, Small business, Mid-market (editorial estimate) |
| Integrations | 2 integrations: OpenSim, Blender |
| Pricing | Free plan |
| Website | davidpagnon.github.io |
| Facts checked | 23 Sep 2026 |
Sports2D integrations
Sports2D lists 2 integrations on its own site.
- OpenSim
- Blender
Alternatives to Sports2D
- Vicon ShogunA mature Windows suite for detailed optical, markerless, and finger motion capture.8.9
- Xsens AnimateA mature inertial capture suite for live production, offline export, and complex scenes.8.8
- Autodesk MotionBuilderA character-animation workspace with mocap retargeting, control rigs and FBX exchange.8.7
See all Sports2D alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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