Since this thread is dated back to 2006, I'm wondering if there are any new ones.

I use Multisim, but looking for free simple ones similar to that.
Web-based would be preferred.

 

This is that old thread - http://forum.allaboutcircuits.com/showthread.php?t=2045

 

Try this open source circuit drawing software http://dia-installer.de/index_en.html