A fost lansat pe 31 octombrie 2006 dintr-o nevoie. Azi împlinește 7 ani. În spatele lui este Kovid Goyal. Este indian, și-a luat doctoratul în fizică, la CalTech, a stat o perioadă în State, acum locuiește din nou în India.
calibre started life on 31 October, 2006, soon after the release of the SONY PRS-500, the first e-ink based reader to be sold commercially in the US.
At the time, I was a graduate student, with a lot of time on my hands. The PRS-500 did not work at all with Linux, my operating system of choice, so I decided to reverse engineer the USB protocol that it used, to get it working on Linux. This was accomplished with the help of the fine folks over at mobileread.com and calibre was born, albeit named libprs500.