Python interface to OpenEMS, for PCB trace simulation. Accepts Gerber files as input. Features automatic grid generation and postprocessing.

Python tools for signal integrity applications

S + Autograd + XLA :: S-parameter based frequency domain circuit simulations and optimizations using JAX.

Frequency domain, multi-tone harmonic balance, simulation of scattering parameters and noise in nonlinear circuits containing Josephson junctions. Scattering parameter conversion and interconnection.

NanoVNA‑X is a refined firmware for NanoVNA‑H/H4, introducing an event‑driven architecture, improved sweep stability, UI polish, per‑unit USB identifiers, and integrated SD features for reliable field operation.​

FDTD 3D simulator that generates s-parameters from OFF geometry files using one or more GPUs

CAD tool for designing RF and microwave circuits.

PyVNA: Multi-protocol Python library for NanoVNA V1/V2/LiteVNA, derived from GoVNA for high performance & secure server-side applications. Supports auto-detection, robust device pooling, and comprehensive data handling.

CAD tool for designing RF and microwave circuits

Utility to transform, cascade, de-embed and describe s-parameter touchstone files

OPICS : An S-parameter based photonic circuit simulator

RF Toolbox for TI-Nspire Calculators

GoVNA: A robust and secure Go library for controlling NanoVNA vector network analyzers. Features multi-protocol support (V1, V2/LiteVNA), automatic device detection, and optimized for high-performance server-side applications.

ELC3050: a calculator for rectangular cavity resonator quality factor using matlab + dipole antenna project

Inductor lumped circuit model from s-parameters.

Designing Amplifier based on S-parameters

Qucs-S S-parameter and RF Circuit Synthesis Tool

Nicholson-Ross-Weir (NRW) method in python for calculating refractive index, permittivity and permeability from scattering parameters (S11/S21).

3D finite-element electromagnetics (FEM) solver for RF/mmWave simulation. Computes S-parameters, radiation patterns, and fields using Nédélec edge elements. Supports wave ports, PML/ABC boundaries, periodic structures, and dispersive materials.