Procore - Procore is the world's most widely used construction project management software. Easy to use, mobile platform with unlimited user licenses.
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.
BuilderTREND - Buildertrend is the #1 construction management software and construction app for home builders, remodelers, specialty contractors and commercial construction.
Circuit Simulator - Animated electronic circuit simulator using ideal components to visualize voltage and current.
CoConstruct - CoConstruct's project management software helps custom builders & remodelers coordinate projects, communicate with clients & crew, and control.
Solve Elec - Solve Elec is a free educational program to draw and analyze electrical circuits.