Yes, both Zenduty and Opsgenie offer a Free Trial.
Zenduty is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Opsgenie is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Zenduty Starts at $5/User/Month when Billed Yearly whereas for Opsgenie Starts at $9/User/Month when Billed Yearly.
Some top alternatives to Zenduty includes Freshservice, PagerDuty, Opsgenie, VictorOps, AlertOps, Spike.sh, Rootly, Incident.io, StatusCast Incident Management, PagerTree and ResQ.
Some top alternatives to Opsgenie includes Freshservice, Jira Service Desk, PagerDuty, VictorOps, Amixr, AlertOps, Splunk On-Call, Spike.sh, Mission Manager, StatusCast Incident Management and PagerTree.