Synopsys definitely has offerings for all of those things. IC Validator also completely blows both Cadence's and Mentor's offerings out of the water when it com

Synopsys definitely has offerings for all of those things. IC Validator also completely blows both Cadence's and Mentor's offerings out of the water when it comes to DRC and LVS, although Calibre from Mentor Graphics has more market share in that area at the moment (though I think ICV might be slowly picking up steam when it comes to market share).