OpenRefine is a free, open-source tool for working with messy data: cleaning (heterogeneous, incomplete, erroneous, noisy, or poorly normalized data), prepare (format, organize, or code data that is not suitable for the analysis tool or the questions to be explored), enrich (cross-reference with other data or retrieve information from the Internet), format (modify the organization of a file and the content of cells, in graphical mode or with formulas).

This software is downloaded locally, allowing users to keep their data private before considering sharing it.

To access: https://openrefine.org/

For more information: https://openrefine.org/docs