simbody/simbody
High-performance C++ multibody dynamics/physics library for simulating articulated biomechanical and mechanical systems like vehicles, robots, and the human skeleton. observed · 2026-08-28
Health v2 · maintenance only
67/100
- Activity 99
- Release rhythm 8
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 4766
- days_rel: 473
- days_push: 8
- n_releases_24m: 1
Adoption not part of the score
2547 stars · 496 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
Simbody is a high-performance open-source C++ multibody dynamics library for science- and engineering-quality simulation of articulated mechanisms such as skeletons, robots, vehicles, and machines. It uses a Featherstone-style O(n) formulation in generalized coordinates and serves as an API for building domain-specific applications like OpenSim and Gazebo.
Use cases
- simulate articulated rigid body mechanisms with joints and constraints
- simulate human or animal skeletal biomechanics
- physics simulation for robotics applications
- model vehicle or machine dynamics in C++
- internal-coordinate modeling of molecules
- real-time interactive biosimulation or animation
When to choose
- you need accuracy-controlled, engineering-quality multibody dynamics rather than game-grade approximations
- you are building a C++ application needing O(n) articulated-body dynamics
- you work in biomechanics, robotics, or molecular modeling and want a proven engine used by OpenSim and Gazebo
When to avoid
- you want a standalone physics application or GUI rather than a C++ library
- you need soft-body, fluid, or particle simulation
- you prefer a high-level scripting interface like Python or a game-engine plugin out of the box
Facets
library · maturity stable
simulation graphics math robotics simulation healthcare cpp cross-platform windows multibody-dynamics physics-engine featherstone biomechanics rigid-body-dynamics articulated-bodies c-plus-plus-api game-development algorithms linux macos
7 sources
- readme: https://github.com/simbody/simbody · fetched 2026-08-28 · d5697e0783b8
- homepage: https://simtk.org/home/simbody · fetched 2026-08-29 · b46753af53a6
- site_page: https://simtk.org/aboutCommunities.php · fetched 2026-08-29 · 6cc54b8a1d61
- site_page: https://simtk.org/features.php · fetched 2026-08-29 · db7714e1f677
- site_page: https://simtk.org/faq.php · fetched 2026-08-29 · 67b871afbd9f
- site_page: https://simtk.org/tracker?atid=232&group_id=47&func=browse · fetched 2026-08-29 · ba3b578da14d
- site_page: https://simtk.org/whatIsSimtk.php · fetched 2026-08-29 · 209c14d9e572
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| simbody/simbody | main | 67 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem