The Parallax USB Oscilloscope is a digital real-time storage oscilloscope.
Syscomp Electronic Deisgn
It's a software for the Digital Storage Oscilloscope (DS0-101).
This software is an add-in accessory for the Agilent IntuiLink Waveform Editor.
Society of Robots
Program designed to convert your microcontroller into a free oscilloscope.
Design electrical circuits for complex installations.
Circuit Magic is an electrical circuits simulation program.
University of Colorado
Build circuits with resistors, light bulbs, batteries, and switches.
the Qucs team
Quite Universal Circuit Simulator is an integrated circuit simulator.
Circuit Shop allows you to design electronic circuits.
McCAD Schematics is a sophisticated engineering database management system.
EasyValve allows you to proficiently create your hydraulic circuit schematic.
CometCAD is circuit schematic and layout editor program.
KiCad Developers Team
You can create schematic diagrams or printed circuit board with up to 16 layers.
sPlan is a software to design your schematic circuit diagrams easy and fast.
The Proteus combines schematic capture, SPICE circuit simulation, and PCB design.
It consists of integrated schematic and printed circuit layout editors.
Rimu Schematic is an electrical and electronic schematic capture software.
Schematic drawing tool targeted at producing nice publishable schematic captures.
Richard P. Andresen
Use analog circuit simulation for the professional circuit designer.
Air circuit breakers can be used both as circuit-breakers for general protection.