XL Audit Commander provides a variety of audit tools which can be run from within Excel, all at no cost. An operation guide explains the commands available and the procedures to perform them.The software uses a very minimal portion of your spreadsheet area and can easily be invoked only when needed by pressing Control-E. Download the software to try. Also included is the capability to perform a variety of data extracts for audit tests, and examples are included in a sample workbook for download.
These include such tests as searching for close matches on names, data extraction using conditions, etc. More details.