Comprehensive two-dimensional gas chromatography (GC × GC) is a recent chemical separation technique with particular efficiency for detailed molecular analysis.However, due to the novelty of the method and the lack of automated analysis tools, quantitative data processing is often performed manually.Hence, results are strongly user-dependent and consequently time consuming and relatively inaccurate.The Polychrom software for GC × GC visualization, quantitative analysis and data edition is proposed to alleviate the former drawbacks and to provide semi-automated product-based peak identification.