OpenChrom® is an open source software for chromatography, spectrometry and spectroscopy. Data from different systems can be imported and analyzed, hence it’s a vendor independent software. Moreover, it runs under Windows, macOS and Linux. So the user has the choice to work wherever he wants, independent of the system. Originally, the intention was to create a ChemStation alternative. Meanwhile, it has become much more. Generally, it supports to handle GC/MS, GC/FID, HPLC-UV/VIS, FTIR, PCR and NMR data. Originally, OpenChrom® was designed to analyze data from analytical pyrolysis, called Py-GC/MS.