EEGLAB 2021.1.0.0 for Mac was free to download from our software library. This free Mac app was originally developed by Swartz Center for Computational Neuroscience. EEGLAB for Mac belongs to Design & Photo Tools.
From the developer:
EEGLAB is an interactive Matlab toolbox for processing continuous and event-related EEG, MEG and other electrophysiological data incorporating independent component analysis (ICA), time/frequency analysis, artifact rejection, event-related statistics, and several useful modes of visualization of the averaged and single-trial data.
You may want to check out more Mac applications, such as Cuadro or Resize Now, which might be related to EEGLAB.