<p>GRETL () s a cross-platform software package for econometric analysis, written in C. It features:</p><p>Easy intuitive interface (now in French, Italian, Spanish, Polish, German, Basque, Portuguese, Russian, Turkish, Czech, Traditional Chinese, Albanian and Greek as well as English)</p><p>A wide variety of estimators: least squares, maximum likelihood, GMM; single-equation and system methods</p><p>Time series methods: ARMA, GARCH, VARs and VECMs, unit-root and cointegration tests, etc.</p><p>Limited dependent variables: logit, probit, tobit, interval regression, models for count and duration data, etc.</p><p>Output models as LaTeX files, in tabular or equation format</p><p>Integrated scripting language: enter commands either via the gui or via script</p><p>Command loop structure for Monte Carlo simulations and iterative estimation procedures</p><p>GUI controller for fine-tuning Gnuplot graphs</p><p></p><p>Links to GNU R, GNU Octave and Ox for further data analysis</p>