Orion Granatir

Only a quarter of survey participants were satisfied with their spreadsheet testing. Their techniques are largely manual and lack formalism.

Spreadsheets can be considered to be the world's most successful end-user programming language. Spreadsheet formulas are Turing complete.

Our spreadsheet methodology has criteria for designing, building, and validating spreadsheets to ensure that they work correctly.

95% of all spreadsheets contain errors. So, it is almost certain that your spreadsheets are wrong.

See our bibliography of spreadsheet best practice, risk management, errors and testing, and methods for improving spreadsheets.

"Oh My God" my formulas are not working! This article covers most of the reasons for Excel formulas not working. And how to fix them.

Spreadsheet audit and review procedures are an essential part of almost all City of London financial transactions.

Research concludes unanimously that spreadsheet errors are both common and non-trivial. We must seek ways to reduce spreadsheet errors.