OpenSim 4.6 beta has been released!


We are pleased to announce the beta release of OpenSim 4.6. The new release includes:



We encourage you to download the beta and provide feedback.


Learn more | Download the Beta



Webinar on Using OpenCap for Large Scale Biomechanics Studies

June 24, 2026, 9:00 PT


We are pleased to announce our upcoming webinar with Parker Ruth from Stanford University entitled “Accelerating Biomarker Discovery through Large-Scale Motion Capture Using OpenCap”  


Mr. Ruth and colleagues from the Stanford Neuromuscular Biomechanics Lab have used the smartphone video-based tool OpenCap to conduct large-scale human movement data collection events to develop more quantitative and sensitive outcome measures for neuromuscular diseases. The protocols they developed have allowed them to record a battery of nine activities from up to 100 participants in a single weekend. 


In this two-part webinar, Mr. Ruth will share findings from the studies and present best practices for planning large-scale data collection events with OpenCap like his. This event will be hosted jointly by the Mobilize and FAIR Centers on Wednesday, June 24, 2026, at 9:00 AM Pacific Time.


Learn more and register | Read the paper



Learn about OpenCap, AddBiomechanics, and AI Models at GCMAS and WCB Conferences


The FAIR and Mobilize Center team is leading two upcoming conference workshops focused on OpenCap (software for measuring human movement using smartphone videos), AddBiomechanics (cloud-based software for computing inverse kinematics and dynamics from marker-based motion capture data), and AI tools. Join us to learn how to utilize these tools for your research.


OpenCap and AddBiomechanics: Tools for Large-Scale and Accessible Biomechanics

Highlighted Tools: OpenCap, AddBiomechanics

June 9-13, 2026

Gait and Clinical Movement Analysis Society (GCMAS) Annual Conference

Phoenix, Arizona


Accelerating the Use of Artificial Intelligence to Analyze Human Motion: Hands-on Tutorial and Discussion

Highlighted Tools: OpenCap, AddBiomechanics, AI tools

July 11-16, 2026

World Congress of Biomechanics

Vancouver, British Columbia, Canada



Co-Designing Event for the Future of Health and Athlete Technology


Stanford's Co-Design for Health and Technology (CHAT) workshop brought together 80+ students, engineers, clinicians, and individuals with lived experiences to co-design assistive technology solutions in a single day. From smart rowing gloves to prosthetic adaptations, teams built working prototypes alongside the people who would actually use them. 


Explore the prototypes and read the news release



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OpenSim, OpenCap, AddBiomechanics, and related AI tools are supported by the Mobilize Center, an NIH Biomedical Technology Resource Center (grant P41 EB027060); the FAIR Center, an NIH-funded Medical Rehabilitation Research Resource Network Center (grant P50 HD118632); and the Wu Tsai Human Performance Alliance through the Joe and Clara Tsai Foundation. 


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