Re: Commercial routing tools
Earlier Synopsys had Astro as their PNR tool, but now they've launched IC Compiler for their 65nm process & beyond ICC uses Zroute as its router engine which is a multi-threaded router, belive me life in 45nm is not easy & ICC have shown very good routing results as compared to their earlier router, it gives best DFM & DRC coverage, timing, and other design goals
Cadence Precision Router (CPR) is the router used in advanced PNR tool from cadence such as SOC Encounter
Blast fussion is the tool from Magma but they are launching some other tool too