Huh I always assumed Apple had acquired Concurrence but reality turns out to be far more interesting - the developers were acquired by Sun of all people to develop an OpenStep and then Java office suite...
Even funnier, when Sun showed Looking Glass desktop demo, Jobs apparently called Schwartz with a Cease & Desist demand. Schwartz reportedly answered with equivalent of "nice presentation program you have there, would be a shame if it was canceled for copyright infringement" and the C&D was dropped.
