iPlanet was a product brand that was used jointly by Sun Microsystems and Netscape Communications Corporation when delivering software and services as part of a non-exclusive cross marketing deal that was also known as "A Sun|Netscape Alliance".

In 2001, the three year alliance came to an end, at which point, under the terms of the deal, both AOL and Sun retained equal rights to the code that had been jointly developed.

[2] Toward the end of August 2001 many of the remaining Netscape employees were either laid off or transferred to Sun (mostly at its campuses in Santa Clara, California and Bangalore).

During the period of the alliance, Netscape had hired very few people, most staff coming under the Sun umbrella.

AOL had continued to market the directory and certificate server products under the Netscape brand.