KiCad - A Cross Platform and Open Source Electronics Design Automation Suite
Autodesk BIM 360 - Autodesk BIM 360 is a construction project management software.
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.
Procore - Procore is the world's most widely used construction project management software. Easy to use, mobile platform with unlimited user licenses.
Fritzing - Fritzing is an open-source initiative to support designers, artists, researchers and hobbyists to...
PlanGrid - The #1 construction app. Used by thousands of companies to save time, money, and ditch paper plans forever.