SARAH 4 is a Mathematica package that extends its capabilities beyond supersymmetric (SUSY) models to support non-SUSY models. It provides tools for defining models, calculating vertices, mass matrices, tadpole equations, self-energies, and two-loop renormalization group equations (RGEs) for general gauge theories. The package generates model files for FeynArts, CalcHep/CompHep, WHIZARD, and the UFO format, and produces source code for SPheno to calculate mass spectra, precision observables, and decay widths. It also supports global symmetries and links to Susyno for handling Lie groups. SARAH 4 includes routines for outputting model files for Vevacious, which allows checking the global minimum of the one-loop effective potential for a given model. The package supports non-SUSY fields and includes new features such as handling non-fundamental representations, defining matter interactions, and calculating RGEs for non-SUSY models. It also provides a way to interface with Monte Carlo tools like CalcHep, MadGraph, and WHIZARD. SARAH 4 is validated with the Python package PyR@TE and has been tested on various models, including the Minimal Supersymmetric Standard Model (MSSM) and the Next-to-Minimal Supersymmetric Standard Model (NMSSM). The package is designed for use with Mathematica and supports a wide range of models and calculations.SARAH 4 is a Mathematica package that extends its capabilities beyond supersymmetric (SUSY) models to support non-SUSY models. It provides tools for defining models, calculating vertices, mass matrices, tadpole equations, self-energies, and two-loop renormalization group equations (RGEs) for general gauge theories. The package generates model files for FeynArts, CalcHep/CompHep, WHIZARD, and the UFO format, and produces source code for SPheno to calculate mass spectra, precision observables, and decay widths. It also supports global symmetries and links to Susyno for handling Lie groups. SARAH 4 includes routines for outputting model files for Vevacious, which allows checking the global minimum of the one-loop effective potential for a given model. The package supports non-SUSY fields and includes new features such as handling non-fundamental representations, defining matter interactions, and calculating RGEs for non-SUSY models. It also provides a way to interface with Monte Carlo tools like CalcHep, MadGraph, and WHIZARD. SARAH 4 is validated with the Python package PyR@TE and has been tested on various models, including the Minimal Supersymmetric Standard Model (MSSM) and the Next-to-Minimal Supersymmetric Standard Model (NMSSM). The package is designed for use with Mathematica and supports a wide range of models and calculations.