National Key Laboratory of Cognitive Neuroscience and Learning GNU General Public License (GPL) Yes Beijing Normal University NITRC GRETNA Yes Xin-di Wang GRETNA is a graph theoretical network analysis toolbox which allows researchers to perform comprehensive analysis on the topology of brain connectome by integrating the most of network measures studied in current neuroscience field. 2015-10-17 gretna_1.2_release 2014-9-04 gretna_1.1_release GRETNA GNU General Public License (GPL), EEG/MEG/ECoG, MR, PET/SPECT, Computational Neuroscience,