geer1895 / rfauto

RF/microwave design automation + LLM orchestration: 16 EM/EDA engines behind one interface, 75 parameterized template families, 340 deterministic calculators, 87 calibration anchors; AI agents drive everything via MCP (157 tools) — physics numbers come only from deterministic kernels, never from the LLM. 28000+ unit tests, GPL-3.0

modelica / ModelicaStandardLibrary

Free (standard conforming) library to model mechanical (1D/3D), electrical (analog, digital, machines), magnetic, thermal, fluid, control systems and hierarchical state machines. Also numerical functions and functions for strings, files and streams are included.

pathsim / pathsim

A Python native dynamical system simulation framework in the block diagram paradigm.

zenineasa / Konjugate

A graph-native simulation engine for building composable engineering simulations and digital twins.

Echo-aloha / asphalt-codex-skills-5

Codex Skills for version-pure PFC2D/PFC3D 5.0 asphalt-mixture modeling, FISH scripting, calibration, Burger contacts, Marshall and rutting tests, and reproducible post-processing.