Coil32 - Coil32 is one of the best apps featured with an inductance coil calculator to calculate chokes, flat square coils, and single/multi-layer air-core inductors on printed circuit boards.

Circuit Simulator - Animated electronic circuit simulator using ideal components to visualize voltage and current.

Virtuino Modbus - Virtuino Modbus is an app that enables you to monitor or control the automation system by using IP protocol or Modbus TCI.

LTspice - LTspice® is a high performance SPICE simulation software, schematic capture and waveform viewer with enhancements and models for easing the simulation of analog circuits.

Electronics Assistant - Electronics Assistant is a Windows program that performs electronics-related calculations.

Circuit Solver - Circuit Solver uses a simple drag and drop approach to building circuits.