Before Mac OS X was released as Beta in 2000, Apple released the developer preview builds, which are Mac OS X DP1, DP2, DP3 and DP4. The appearance changed from DP2 to DP3 because they introduced the Aqua theme.  Refer to the screenshots...

Mac OS es un sistema operativo desarrollado por Apple Computers para su línea de ordenadores Macintosh. Mac OS 9 (más específicamente OS 9.2.2) es el último de los Mac OS "clásicos" antes de la...

Sorbet Leopard is modernized Mac OS X 10.5.9 with many optimization patches that make it run faster and in a more secure fashion. One of the many interesting features is its security certificates that match those of macOS 10.13.6.  It also...

"Rhapsody" DR1 and DR2 were the developer releases (beta) of what would soon become Mac OS X Server 1.0 and then Mac OS X 10.0.  Rhapsody is a software product, named NeXTSTEP from 1989 to 1997, that Steve Jobs developped and brought...

A/UX is Apple Inc.'s implementation of the Unix operating system for some of their Apple Macintosh computers, the latest versions running on the Mac II, Quadra and Centris series of...

Mac OS 9 Updaters (US English) 9.0.4 (April 2000) 9.1 (January 2001) 9.2.1 (August 2001) 9.2.2 (December 2001) See also: Mac OS 9 Retail CD's

Note that at the time of writing this, Apple still hosts Mac OS X and macOS installers for download, free of charge, directly from their website (10.7 to 10.12) or from the App Store (10.13 to 14.0) here:...

All following are English.  For international System 6.0 to 6.0.8 (in 29 different languages) and variations, check out the System 6 International Collection page. 1st download is SSW 6.0.8 (2 x 1.4MB regular floppy disk images) 2nd...

The first release of Mac OS X that is really recognizable since this is the first release to introduce aqua.

Note that this is kind of obsolete, see this more up to date version: https://www.macintoshrepository.org/80930-mac-os-x-10-6-8-for-powerpc-alpha-3-macrumors- Developer preview beta build 10A190 of Mac OS X Snow Leopard 10.6 This is...

These are a bunch of ISOs of Mac OS 8.0 and 8.1, 2 versions of Mac OS 8 released between 1997 and 1998.

This is for Intel x86/x86-64 based Mac Computers only (32bit and 64bit) NO PPC! I had this disc sitting around and did not see it on this website, so I made an ISO file in Linux (if that makes a difference for you) to share. I did NOT modify this...

Those are single sided (400KB) disk images of Mac OS 1.0 pre-release, which cannot be mounted on anything else than an early B&W Macintosh or Mini vMac (it will NOT mount on a PPC or Intel system at all). - 128k-guided-tour.img : This is the...

This is the initial restore CD set for the iMac G4 from summer 2002.  Just a couple weeks after it came out, there was a second restore CD set released with Mac OS X 10.2

DVD Instalador en español (DVD mutlilenguaje?). Probado sin problemas sobre un PowerBook G4 667 DVI - se  actualizó en forma automática a  10.4.11

Power Mac G4 Mac OS 9 Install CD Mac OS version 9.2.1 CD version 1.0 691-3295-A

 Mac OS X 10.1 install CD (Part Number 1Z691-3060-A)   Is Missing