MedCalc is a statistical software package for the biomedical sciences with an integrated spreadsheet for easy data input. It can import Excel, SPSS and files in text or other formats. Special features of the program are, amongst others, lots of graphs including ROC curves, Kaplan-Meier survival plots, Bland & Altman plot, Deming and Passing & Bablok regression for method comparison. Certified for Windows Vista. Free trial available.