* [gcsim v2.44.2](https://github.com/genshinsim/gcsim) – Monte Carlo combat simulator modeling Genshin Impact actions, damage, reactions, and DPS distributions.

* [PathView v0.17.0](https://github.com/pathsim/pathview) – Web-based visual node editor for building and simulating dynamic systems using in-browser Python via Pyodide with optional Flask backend.

* [Simulacrum @simulacrum/auth0-si...](https://github.com/thefrontside/simulacrum) – Simulation platform that enables high-fidelity application previews and decouples development from external service dependencies.