Cadense tools just run the tcl scripts
OpenROAD is the most similar to that, because it integrates all of the pnr tools
OpenRoad reference scripts are similar to reference scripts from cadence
OpenLane builds on top of OpenRoad and has reasonable default values.
OpenLane uses config.json which contains the configuration variables, take a look at the guide.
You cant translate the script one-to-one to OpenLane, but instead you can take a look at OpenLanes documentation, tutorials, etc as it gives steps to run pnr flow on some macro blocks