Phoenix
<operating system> An
operating system, built in
BCPL on top of
IBM MVT and later
MVS by Cambridge University Computing Service from 1973 to 1995, which ran on the university central
mainframe.
All parts of the system were named after birds, including Eagle (the job scheduler, also the nearest pub), Pigeon (the mailer),
GCAL (the text processor) and Wren (the command language), leading to Wren Libraries (a local pun).
Phoenix was much used by chemists in daytime and by the rest of the university in the evenings, and was only abandoned in favour of
Unix in 1995; it is one reason Cambridge made little contribution to Unix until then.
Computing Service Phoenix closure memo (http://www.cam.ac.uk/cs/newsletter/1995/nl183/phoenix.html)