 Some software which had been available from Zeo to developers, while no longer available from the discontinued Zeo Web site or the Wayback machine, was circulated; for example a data decoder library.During the company's existence ZeoScope software using the decoder library, which allowed the Zeo to be used as a biofeedback device with EEG display and functionality related to lucid dreaming, had been written by an independent developer and distributed without charge under the Apache licence; it did not use facilities of the Zeo Web site, and continued to work after the company closed.At least some of the assets were acquired by ResMed, widely known for their CPAP machines.