Providing online non-downloadable computer software for monitoring, recording, and analyzing electroencephalography (EEG) brain signals; Providing online non-downloadable computer software for training machine-learning models on EEG data; Providing online non-downloadable computer software platforms for brain-computer interface application development; Providing online non-downloadable computer software for biofeedback and neurofeedback; Providing temporary use of non-downloadable cognitive s...