Not to be confused with Mac OS 8.

Version of Mac OS
Preliminary name
Latest build
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Mac OS 7

Copland was the codename for an unreleased Mac OS version that was intended to be the modernized successor to Mac OS 7. The Copland project started in March 1994 and was eventually cancelled in August 1996. The project aimed to port a majority of the Mac OS feature set over to a nanokernel in an attempt to increase kernel stability and improve multitasking functions while retaining compatibility with classic Mac OS applications.

Following the cancellation of Copland, most Finder and shell features that could be ported from the project were later reimplemented into Mac OS 8. Apple continued to seek a new operating system to continue where Copland was left off, and after the acquisition of NeXTSTEP, would build from that foundation to start a new generation of Mac operating systems known as Mac OS X.

Currently, only three builds of Copland have been found, although no emulators are known to boot any of them.

List of known builds[edit | edit source]

Leaked build D9