The Geneious Prime "Find restriction sites" tool can be used to find and annotate sites for nicking endonucleases (https://en.wikipedia.org/wiki/Nicking_enzyme).
Import the attached .geneious file to create a list of commercially available nicking enzymes into Geneious.
You can set the list as the Candidate Enzymes: list in the Geneious Restriction Analysis Tab. Use the Advanced button to set the enzyme types you wish to detect.
Many thanks to REBASE for providing the list. Please cite the Restriction Enzyme Database if you use this list: See http://rebase.neb.com.