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FELIX (Frequency Extraction for LIghtcurve eXploitation) is a free software developed by S. Charpinet at IRAP (CNRS) primarily designed for the visualisation and analysis of time series data from either ground or space-based monitoring campaigns. It was originally developed to handle long time series from space photometric missions such a CoRoT, Kepler and TESS and provide an efficient way to explore these data, search and extract frequencies in variable stars. FELIX is meant to be computationally and ergonomically efficient.

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An intuitive user interface with efficient analysis tools

FELIX provides an intuitive visualisation framework with efficient tools to explore and exploit time series data using the prewhitening method.