The items in the lists are given in the alphabetical order, and not in the order of any preferences or complexity. They do not claim to be exhaustive, as some software packages available on the market may not be presented here. Also we do not provide the links to the listed packages because software developers often change links to their products due to permanent development and marketing processes. Relevant links can be readily found via various Internet search resources.
Mechanical Design
Electrical Design Tools & Apps
PCB Design Tools
3D CAD for Architects & Civil Engineering Design
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