The question is kinda meaningless.
Yes you can get Cadence schematic composer or mentors schematic entry but also orcad or quite few other tools but those alone are not worth much incase you will not be able to run simulation or create layout. For ASIC flow you need those interactions or any tool on its own has no value though is the best in the universe.
I use Cadence Schematic composer with Spectre and Virtuoso layout + autorouters from third party comps. and viewers (again third party), and also Build Gates again from cadrence.
Or I use Mentors Design architect and IC station and Eldo and ADA .... becase the PDK is designed to work with those tools.
If you want to just draw schematic use ORCAD or some free tools.