Is your Mac up to date with the latest version of the Mac operating system (macOS or OS X)? Is it using the version required by some other product that you want to use with your Mac? Which versions are earlier (older) or later (newer, more recent)? To find out, learn which version is installed now.
Mac OS 9.x, based on Mac OS 8 was the final product based on the classic MacOS architecture. Like previous version, it lacks true protected memory or pre-emptive multitasking. MacOS 9 was abandoned in favor of of the Unix-ish NextStep/Openstep based Mac OS X. Running MacOS 9 requires a supported Power PC based Macintosh (see the compatibility matrix), or the following. Global Nav Open Menu Global Nav Close Menu; Apple; Shopping Bag +.
If your macOS isn't up to date, you may be able to update to a later version.
Do you use an Intel-based Mac but still have a few essential Classic (pre-OS X) Mac applications you want to run? Recent universal compiles allow you to use SheepShaver (SS) or Basilisk II (B2) to run Classic software in emulation on Intel Macs under Mac OS X directly - or under Windows via dual-boot or Parallels virtualization. B2 emulates an old 68K Macintosh, while SS emulates a PowerPC Mac. Apple users are used to transitions, having moved from 68k-based Macs to Power PC processors, and the classic Mac OS 9 to Mac OS X. Now it's time for the third and most shocking transition of all: the move to Macs with Intel processors. There's one word on the lips of most Mac users at the moment, and that word is Intel. A friend has all his emails in Outlook Express on a G3 iMac running only Mac OS 9, and he wants to move them to his new Intel iMac. Unfortunately, Mail's import feature requires Outlook Express to be running. Thusly you need Classic, but Intel Macs don't have Classic.
Which macOS version is installed?

From the Apple menu in the corner of your screen, choose About This Mac. You should see the macOS name, such as macOS Mojave, followed by its version number. If you need to know the build number as well, click the version number to see it.
This example shows macOS Catalina version 10.15 build 19A583.



Which macOS version is the latest?
These are all Mac operating systems, starting with the most recent. When a major new macOS is released, it gets a new name, such as macOS Catalina. As updates that change the macOS version number become available, this article is updated to show the latest version of that macOS.
Mac Os 9 Software
If your Mac is using an earlier version of any Mac operating system, you should install the latest Apple software updates, which can include important security updates and updates for the apps that are installed by macOS, such as Safari, Books, Messages, Mail, Music, Calendar, and Photos.
Mac Os 9 Online
macOS | Latest version |
---|---|
macOS Catalina | 10.15.7 |
macOS Mojave | 10.14.6 |
macOS High Sierra | 10.13.6 |
macOS Sierra | 10.12.6 |
OS X El Capitan | 10.11.6 |
OS X Yosemite | 10.10.5 |
OS X Mavericks | 10.9.5 |
OS X Mountain Lion | 10.8.5 |
OS X Lion | 10.7.5 |
Mac OS X Snow Leopard | 10.6.8 |
Mac OS X Leopard | 10.5.8 |
Mac OS X Tiger | 10.4.11 |
Mac OS X Panther | 10.3.9 |
Mac OS X Jaguar | 10.2.8 |
Mac OS X Puma | 10.1.5 |
Mac OS X Cheetah | 10.0.4 |
