Wikipedia
OpenBCI
OpenBCI is an open source brain-computer interface platform. OpenBCI was created by Joel Murphy and Conor Russomanno, after a successful Kickstarter campaign in late 2013.
OpenBCI boards can be used to measure and record electrical activity produced by the brain ( EEG), muscles ( EMG), and heart ( EKG), and is compatible with standard EEG electrodes. The OpenBCI boards can be used with the open source OpenBCI GUI, or they can be integrated with other open-source EEG signal processing tools.