Yes, both Grafana and Snapboard offer a Free Trial.
Grafana is designed for Large Enterprises, Medium Business and Small Business.
Snapboard is designed for Individuals, Medium Business and Small Business.
Pricing for Grafana Starts at $49/Month whereas for Snapboard Starts at $8/Month.
Some top alternatives to Grafana includes iDashboards, DataHero, Databox, Klipfolio Dashboard, Prometheus, Splunk Cloud, SensorCloud, Chartbrew, SharpDash and Quickmetrics.
Some top alternatives to Snapboard includes Alteryx, iDashboards, DataHero, Corporater Business Management Platform, Databox, DashThis, DB Dash, Easy Insight, Dashup and SharpDash.