The World's most useful Excel add-ins

Power tools for Excel

Tweak Excel to work exactly how you’ve always wanted

Navigation tools for Excel

FormulaDesk Navigator

No more endless scrolling to find the sheet you want – arrange sheets YOUR way: multi-line, vertical, floating…

Real math inside Excel

FormulaDesk Math

View formulas as equations, plot formulas…instantly. All the tools that engineers and students need every day, now inside Excel.

Visualize & trouleshoot formulas

FormulaSpy

Visualize and troubleshoot Excel formulas – instantly. Highlight the exact error in a long formula. See how nested results are calculated.