These are the system requirements for Topaz Software*. Mac Intel-based Macs with OS 10.6, 10.7 or 10.8 (Topaz is NOT compatible with PowerPC processors - like G4 or G5.) 2 GB RAM minimum - preferably more Adobe Photoshop CS4-CS6 (32-bit and 64-bit), Adobe Photoshop Elements...

Mac OS 10.4 has it's own Topaz installers. Mac 10.4 users, please make sure that you are using the Tiger 10.4 versions which can be downloaded here.

No, Topaz software is not available as a stand alone. Topaz software are plug-ins only and must be used with a compatible image editing host program.

Topaz software is only compatible with Intel-based Macs. If your computer is not Intel-based then unfortunately you will not be able to use Topaz. You can check your processor type by going to the Apple menu and select "About this Mac" Next to processor it will say Intel or PowerPC.

Yes, Topaz software is compatible with the new Windows 7 OS.

Yes, Fusion Express is now available for Lightroom Windows. You can download it here. For more information about Topaz Fusion Express please see the Fusion Express home page. And you can visit topazlabs.com/setup for step-by-step instructions.

Unfortunately, Topaz Vivacity is not compatible with CS5. 

Yes, Adjust, DeNoise, Simplify, Detail, Clean, DeJPEG, ReMask and Vivacity are compatible with Photoshop Elements 8.

No, unfortunately there are not. Topaz software is only compatible with Intel-based Macs. If your computer is not Intel-based then unfortunately you will not be able to use Topaz.

No, at this time Topaz Enhance is not compatible with After Effects CS5. However Enhance should have an upgrade later in 2010 which is expected to include CS5 support.