The document discusses several top tools for data cleansing: OpenRefine, Trifata Wrangler, Winpure, and TIBCO Clarity. OpenRefine is an open source tool that identifies corrupt data and transforms it. Trifata Wrangler utilizes machine learning to provide data transformation recommendations. Winpure specializes in cleaning bulk amounts of business and customer data. TIBCO Clarity is a cloud-based tool that utilizes visualizations to streamline data quality improvements and transformations.