Guru is a brand. They are made in Montreal. You can buy ready made frames or custom bikes from them. There are only a few shops int he US that have the Guru fitting machine. It is a bike simulator that can be made to change every aspect of the fit. You pedal as it is hooked up to a computer and they look at your output as different things on the bike are tweaked. My shop started with the numbers from my present bike and tweaked it from there. He thought I would like a more upright position, but no, that went out the window right away... just moving one thing a little made a huge difference. When this is done, they send you the specs and once you approve it, it gets sent to Guru and they build the frame.
2015 Trek Silque SSL
Specialized Oura
2011 Guru Praemio
Specialized Oura
2017 Specialized Ariel Sport