Spreadsheet Compare is built into Excel/Office. It's a relatively unknown tool since it came out in 2013. See: https://support.office.com/en-us/article/Basic-t

Spreadsheet Compare is built into Excel/Office. It's a relatively unknown tool since it came out in 2013. See: https://support.office.com/en-us/article/Basic-tasks-in-Spreadsheet-Compare-f2b20af8-a6d3-4780-8011-f15b3229f5d8 https://support.office.com/en-us/article/Basic-tasks-in-Spre...