Vacuum Tube Design Software -

: Formerly a paid professional tool, it is now free and includes robust support for vacuum tube simulation, including AC transient analysis. 2. Specialized Tube Design Tools

: A professional-grade tool frequently used for high-accuracy time and frequency domain analysis. It is particularly effective for simulating harmonic and IM distortion in tube amplifiers. Vacuum Tube Design Software

: A specialized, widely recommended tool for designing tube power supplies. It is much faster and simpler to use for this specific task than full SPICE simulators. 3. Advanced & High-Power Simulations : Formerly a paid professional tool, it is

For engineering beyond simple audio amplifiers, such as microwave or industrial devices, more complex software is required. It is particularly effective for simulating harmonic and

While dedicated, standalone software for vacuum tube design is rare, modern engineers and hobbyists primarily use with custom component libraries or niche legacy tools to design and test tube-based circuits. 1. General-Purpose Circuit Simulators (Industry Standard)