Circuit Lab is a online electronics design suite, incorporating schematic design and simulation. It’s free of charge, and allows you to share your designs online.
CircuitLab is a suite of web-based electronics design tools, including the first web-based circuit simulator with the power and accuracy needed for board-level design tasks. Explore example circuits and draw your own schematics…
Thanks Moder! Via the contact form.

Circuit Lab Rocks. Neat interface. I came across another cool product at http://www.DoCircuits.com It has the feel of real looking devices and components. Neat !