MultiQC is a Windows software application for quality control in clinical chemistry laboratories. It was created by a chemical pathologist disappointed with the heterogeneity, the inappropriate design and the poor efficiency of the ancillary QC programmes supplied with analyzers or LIS. The daily investigation of issues arising at the workbench combined with the great improvements in industrial QC for the last three decades led to MultiQC, a programme which provides technicians with a comprehensive control panel to monitor and improve the quality of analytical processes.