CircuitLab

[Sean McBeth]

Can't remember if this came up before or not, but there is this really neat editor for drawing circuit diagrams out on the 'tubes

http://www.circuitlab.com

Everything aligns to a grid and connections between wires are automatically made when they end on the same grid point. Unfortunately, you can't move a subassembly without moving the other ends of all the wires connected to it, but otherwise it's pretty nice.

There aren't a lot of parts in it (but you can kind of estimate most IC-type parts with some of the built in blocks), and though it has a simulator it seems to lock up pretty easily. 

I had even drawn up the linguistics kiosk in it at one point:

https://www.circuitlab.com/circuit/pe6t9a/mp3-kiosk/

[andrew11235]

ya i used them once or twice nothing big tho they are pretty good except i have never got there simulator to work it always died.