There are many different combinations of Photoshop Elements (PSE) and the Operating Systems (OS) it is supported on. Here is a table to help identify which versions of PSE are supported on which versions of Windows and Macintosh. By "supported", we mean that the application is designed and thoroughly tested to work on. Just because a platform is "unsupported" does not necessarily mean that it will not work. What it does mean is that you operate the application on that platform at your own risk. In most cases, a version of PSE is "unsupported" on a specific platform simply because it was released before that version of the OS.
The minimum system requirements (including supported platforms) for the current version of Photoshop Elements can be found here: http://www.adobe.com/sea/products/photoshop-elements/tech-specs.html
The minimum system requirements for all previous versions of Photoshop Elements can be found here:
|Version of Photoshop Elements||Windows XP||Windows Vista||Windows 7||Windows 8|
Mac OS 10.4.x
Mac OS 10.5.x
Mac OS 10.6.x
Mac OS 10.7.x
Mac OS 10.8.x
|Photoshop Elements 2||X||-||-||-||-||-||-||††||††|
|Photoshop Elements 3||X||-||-||-||-||-||-||††||††|
|Photoshop Elements 4||X||-||-||-||X||-||-||††||††|
|Photoshop Elements 5 †||X||X1||-||-||†|
|Photoshop Elements 6||X||X||-||-||X||X||-||-||-||-|
|Photoshop Elements 7 †||X*||X||-||-|
|Photoshop Elements 8||X*||X||X||-||X||X||X||-||-||-|
|Photoshop Elements 9||X*||X||X||-||-||X||X||-||-||-|
|Photoshop Elements 10||X**||X||X||#||-||X||X||X||-||-|
|Photoshop Elements 11||X**||X||X||X||-||-||X||X||X||##|
|Photoshop Elements 12||X**||X||X||X||-||-||-||X||X||X|
* - Requires Service Pack 2 or later
** - Requires Service Pack 3
# - Minimal product testing has been performed on this OS. No issues are known to exist.
## - The Comic Book Filters (Filter > Sketch > Comic/Graphic Novel/Pen and Ink) will cause Elements 11 Editor to crash on Mac 10.9.
1 - Requires the 5.0.2 update
† - This version not available for Mac OS
†† - This version is designed to operate on a PowerPC-based computer. Starting with 10.4, the Mac OS supported both PowerPC and Intel processors. Continued support of PowerPC-based applications on Intel-based computers was made available through the use of Rosetta. In version 10.6, the Mac OS no longer supported PowerPC processors. Starting with version 10.7, Rosetta was discontinued, PowerPC-based applications no longer operate on this or later versions.
[NOTE: Photoshop Elements versions 1-3 ran on earlier version of the Mac OSX platform. For brevities sake, I've only included the 6 latest versions of that OS.]