Yes, both xMatters and Spike.sh offer a Free Trial.
xMatters is designed for Large Enterprises, Medium Business and Small Business.
Spike.sh is designed for Medium Business and Small Business.
Pricing for xMatters Starts at $16/User/Month whereas for Spike.sh Starts at $6.4/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 Spike.sh includes Freshservice, PagerDuty, YetiCloud, Amixr, TaskSift, AlertOps, Mission Manager, FireHydrant, Incident.io, StatusCast Incident Management and ResQ.