Yes, both Grafana and PagerTree offer a Free Trial.
Grafana is designed for Large Enterprises, Medium Business and Small Business.
PagerTree is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Grafana Starts at $49/Month whereas for PagerTree Starts at $10/User/Month.
Some top alternatives to Grafana includes iDashboards, DataHero, Databox, Klipfolio Dashboard, Prometheus, Splunk Cloud, SensorCloud, Chartbrew, SharpDash and Quickmetrics.
Some top alternatives to PagerTree includes Freshservice, PagerDuty, Opsgenie, VictorOps, AlertOps, Spike.sh, Mission Manager, Zenduty, StatusCast Incident Management, Kintaba and Pager Team.