Analyzes and archives quantitative polymerase chain reaction (qPCR) data. SAGE is a web application that parses raw, ungrouped data exported from real time qPCR instrument. It also examines relative gene expression values based on user supplied information. User (i) imports its sample template, (ii) replicates information and the list of genes, and (iii) uploads the raw data. This application provides then graphical and downloadable results from the experiment.