Check NetApp-REST is the more modern successor of Check NetApp-ZAPI. The checks are deliverd as completely dependency free binaries and target the modern RESTful API of NetApps Ontap 9.6 or higher OS versions.
At the moment Check NetApp-REST is supplemental to Check NetApp-ZAPI allowing the check of objects not available on the older ZAPI-only filers or just being faster and easier to deploy.