Sigrity PowerDC

http://www.sigrity.com/products/powerdc/powerdc.htm

Today's low-voltage, high-current designs require accurate voltage drop analysis
for package and board power distribution systems to budget critical end-to-end
voltage margins for every device in the design. Sigrity's PowerDC PKG and PowerDC
PCB software solutions deliver customized DC analysis for today's high-speed IC
package and printed circuit board designs.