Patrick O'Beirne provides quality training and consulting in Excel/VBA development, training, testing, model review, analytics, and spreadsheet auditing.

He is the author of the "Spreadsheet Check and Control" book on Best Practice skills in spreadsheet development for end-users. He also developed the XLTest spreadsheet addin for auditing and spreadsheet inventory for compliance projects.

XLTest helps you to check the integrity of your spreadsheets far more quickly than with tedious cell-by-cell inspection. Its colour maps of the worksheets give you a visual overview that enables you to very quickly see inconsistencies. Its detailed listings are ideal for audit record purposes. The ability to compare versions and run test cases facilitate compliance with spreadsheet controls.