Yes, both Tableau and IBM Cognos Analytics offer a Free Trial.
Tableau is designed for Large Enterprises, Medium Business and Small Business.
IBM Cognos Analytics is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Tableau Starts at $12/User/Month whereas for IBM Cognos Analytics Starts at $15/User/Month.
Some top alternatives to Tableau includes Qlik Sense, Entrinsik Informer, Looker, Microsoft Power BI, Dundas BI, QlikView, SAS Business Intelligence, SAP BusinessObjects BI, Microsoft Power BI Desktop and dataSights.
Some top alternatives to IBM Cognos Analytics includes Qlik Sense, Tableau, Microsoft Power BI, Dundas BI, QlikView, SAS Business Intelligence, Clear Analytics, SAP BusinessObjects BI, Panintelligence and ibi Analytics Platform.