Issues

• aarch64 wheel support

  opensim-org/opensim-core#4465 · Filter by author davidpagnon opened on Oct 1, 2026

• Some places name the parent class instead of calling Super

  opensim-org/opensim-core#4451 · Filter by author KaranSinghDev opened on Sep 11, 2026
  2

• Fix debug test failures on windows

  opensim-org/opensim-core#4448 · Filter by author aymanhab opened on Sep 9, 2026
  1

  

• Use Python stable API 3.10 for compatibility with all versions 3.10+

  opensim-org/opensim-core#4444 · Filter by author aymanhab opened on Sep 8, 2026
  

• Test data files are attached to only one test target

  opensim-org/opensim-core#4441 · Filter by author KaranSinghDev opened on Sep 3, 2026
  2

  

• Add AI policy to CONTRIBUTING.md

  Enhancement
  opensim-org/opensim-core#4420 · Filter by author tkuchida opened on Aug 26, 2026
  1

  

• Standardize organization of testing resources

  opensim-org/opensim-core#4393 · Filter by author nickbianco opened on Aug 14, 2026
  2

• Muscle::calcInextensibleTendonActiveFiberForce vs. Muscle::getActiveFiberForceAlongTendon with rigid tendon

  opensim-org/opensim-core#4390 · Filter by author mrrezaie opened on Aug 10, 2026
  20

• Retire DEPENDENCIES build and incorporate into one CMake workflow

  opensim-org/opensim-core#4382 · Filter by author aymanhab opened on Jul 28, 2026
  1

  

• Support grid-based generation of coordinate samples in PolynomialPathFitter

  opensim-org/opensim-core#4376 · Filter by author nickbianco opened on Jul 27, 2026
  

• Thread bottlenecking in PolynomialPathFitter

  opensim-org/opensim-core#4375 · Filter by author nickbianco opened on Jul 27, 2026
  

• Improvements to PolynomialPathFitter

  opensim-org/opensim-core#4346 · Filter by author nickbianco opened on Jul 8, 2026
  

• Knee angle range and SimmSpline in squatToStand_3dof9musc.osim are inconsistent

  opensim-org/opensim-core#4339 · Filter by author nickbianco opened on Jun 16, 2026
  

• Installing reference files for scripting example requires enabling BUILD_API_EXAMPLES CMake flag

  opensim-org/opensim-core#4334 · Filter by author nickbianco opened on Jun 1, 2026
  

• Scaling CustomJoint with skewed axes

  opensim-org/opensim-core#4327 · Filter by author nickbianco opened on May 21, 2026

• Explicitly designating a CustomJoint translation as "scalable"

  opensim-org/opensim-core#4326 · Filter by author nickbianco opened on May 21, 2026

• Simbody Visualizer control

  opensim-org/opensim-core#4324 · Filter by author alexbarry92 opened on May 19, 2026
  6

• Implement extendScale() for CantileverFreeBeamJoint

  opensim-org/opensim-core#4322 · Filter by author nickbianco opened on May 13, 2026
  

• Automated scaling algorithms

  Feature
  opensim-org/opensim-core#4321 · Filter by author nickbianco opened on May 13, 2026
  

• Scaling joints with arbitrary parent axes

  opensim-org/opensim-core#4319 · Filter by author nickbianco opened on May 13, 2026

• Support installing the CasADi Python package alongside OpenSim's Python API

  opensim-org/opensim-core#4312 · Filter by author nickbianco opened on May 5, 2026
  12

  

• Header serialization bug in C3D export to sto/trc for complex data types

  opensim-org/opensim-core#4309 · Filter by author alexbeattie42 opened on May 4, 2026

• CustomJoint 'ankle_r' has collinear axes and are not well-defined

  opensim-org/opensim-core#4293 · Filter by author nigrape opened on Mar 23, 2026
  1

• Support joints where u != qdot in FunctionBasedPath

  opensim-org/opensim-core#4292 · Filter by author nickbianco opened on Mar 19, 2026
  

• DataQueue template type error

  opensim-org/opensim-core#4211 · Filter by author siddn opened on Dec 11, 2025
  5