Yes, both xMatters and OnPage offer a Free Trial.
xMatters is designed for Large Enterprises, Medium Business and Small Business.
OnPage is designed for Large Enterprises, Medium Business and Small Business.
Pricing for xMatters Starts at $16/User/Month whereas for OnPage Starts at $13.99/User/Month when yearly.
Some top alternatives to xMatters includes Freshservice, Ivanti Service Manager, PagerDuty, Opsgenie, AlertOps, Everbridge IT Alerting, Mission Manager, ServiceNow Customer Service Management, Zenduty, StatusCast Incident Management and PagerTree.
Some top alternatives to OnPage includes Freshservice, VictorOps, Amixr, AlertOps, Spike.sh, TaskCall, Mission Manager, Incident.io, StatusCast Incident Management, PagerTree and ResQ.