Business Functions Basic Edition is a free function library for Microsoft Excel with 103 functions for financial modeling, business planning and financial projections, including date, projections and discounted cashflow functions.

Stock Quotes Pro instantly downloads end-of-day historical quotes of stocks, indices and mutual funds publicly traded in US, Canada and international markets.

The Google AdWords ROI calculator allows you to determine the optimal spending level, return on investment and profits when running an AdWords campaign.