The gLAB tool suit is an educational and professional multipurpose GNSS data processing software. It has been developed by gAGE/UPC under a contract of the European Space Agency (ESA). The current version of gLAB allows full GPS data processing with High Accuracy Positioning capability (at the centimetre level), but only a very limited data handling of Galileo and GLONASS. The Chinese Global Satellite Navigation System Beidou was not included in the initial requirements of ESA. The target of this project is to upgrade gLAB with the necessary functions to allow this software to compute user solutions with the Beidou signals.