Yes, both Zoomdata and Tableau Server offer a Free Trial.
Zoomdata is designed for Large Enterprises and Medium Business.
Tableau Server is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Tableau Server begins at $12/User/Month, while pricing details for Zoomdata are unavailable.
Some top alternatives to Zoomdata includes Tableau, Dundas BI, SAS Business Intelligence, Rubix3, TIBCO Spotfire, Biuwer, ibi Analytics Platform, SAS Advanced Analytics, Tableau Server, Qualified and Workvivo.
Some top alternatives to Tableau Server includes Tableau, Microsoft Power BI, IBM Cognos Analytics, Dundas BI, QlikView, SAS Business Intelligence, ibi Analytics Platform, Microsoft Power BI Desktop and Tableau Prep.