Our group founded the ECE Wiki at the University of Virginia. We regularly maintain pages on this wiki that provide many useful tutorials and links related to Integrated Circuit design.
Our group is a part of these centers:
ASSIST - an NSF nano Engineering Research Center (nERC)
We release software, tools, scripts etc. developed as part of our research projects here. The tools are released as free software under the GNU General Public license (GPL). We hope that you find these useful.