circuit design

3D rendering, modeling, animation.

Design and simulate digital circuits.

Design and assemble interactive iOS advertising content.

Electronic circuit simulator.

Electrical circuit analysis and resolution.

Osmond PCB is a flexible tool for designing printed circuit boards.

Qucs is an integrated circuit simulator

Sailcut CAD is a sail design and plotting software allows you to design own sail

Lunacy is a free all-in-one next-gen vector editor for UI, UX, and Web design.

Free prototyping tool to visualize and test design ideas early, all without code