Alteryx was founded in 1997 by Dean Stoecker and Chris Anderson. The company initially provided data integration software to large companies, such as Ford and Procter & Gamble. In 2010, the company released its first product for self-service data analytics. Tableau Software was founded in 2003 by Christian Chabot, Pat Hanrahan, and Christopher Stolte. The company initially provided data visualization software to large companies, such as Microsoft and Google. In 2012, the company released its first product for self-service data analytics.
The answer to this question is not simple as both Alteryx and Tableau have their own advantages and disadvantages. Alteryx is better for data blending and prep, while Tableau is better for data visualization.