FreeFore is a freeware version of AUTOBOX which has been developed and marketed by Automatic Forecasting Systems to build Box-Jenkins models (a super-set of regression and time series models .. ARIMA ) for univariate and multivariate data. It uses automatic modeling heuristics (not pick best) with intervention detection. It tailors the forecast model to the problem at hand including selecting the best lead and lag structures for each input seri..