NumXL (Numerical Analysis for Excel) is an econometrics/time series analysis add-in for Microsoft Excel. Developed by Spider Financial, NumXL provides a wide variety of statistical and time series analysis techniques, including linear and nonlinear time series modeling, statistical tests and others.Although NumXL is intended as an analytical add-in for Excel, it extends Excel’s user-interface and offers numerous wizards, menus and toolbars to automate the mundane phases of time series analysis.