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.
Speccy - Speccy - find the details of your computer's specs. Great for spotting issues or finding compatible upgrades. Download the latest version free.
Circuit Simulator - Animated electronic circuit simulator using ideal components to visualize voltage and current.
HWiNFO - Professional System Information and Diagnostics. Comprehensive Hardware Analysis, Monitoring and Reporting for Windows and DOS. FREEWARE. download. Advertisements.
Solve Elec - Solve Elec is a free educational program to draw and analyze electrical circuits.
AIDA64 - AIDA64 is a system information, diagnostics and benchmarking solution for Windows PC.