Yes, both Looker and Tableau Server offer a Free Trial.
Looker is designed for Large Enterprises, Medium Business and Small 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 Looker are unavailable.
Some top alternatives to Looker includes Qlik Sense, Sisense, Tableau, Microsoft Power BI, Dundas BI, QlikView, SAS Business Intelligence, Microsoft Power BI Desktop, Tableau Server and dataSights.
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.