Yes, both Tableau and data.world offer a Free Trial.
Tableau is designed for Large Enterprises, Medium Business and Small Business.
data.world is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Tableau Starts at $12/User/Month whereas for data.world Starts at $50,000/Year.
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 data.world includes Wdata, Collibra Data Governance Center, Semantic Fact, Iteratively, Manta, Talend Data Catalog, Google Cloud Data Catalog, Alation, SAS Data Quality and Atlan Discovery.