Alternatives to LTspice

Logic designer and circuit simulator

EDA software to develop printed circuit boards

IC design layout viewer and editor

Virtual instrument suite for Digilent Test and Measurement devices

Android emulator

Desktop app for generating videos with LTX models

Monitors and peripherals manager

UML/SysML modelling tool

Free and open-source page layout program

Run Stable Diffusion locally

G-code generator for 3D printers (RepRap, Makerbot, Ultimaker etc.)

Software modeller