Although Adobe has constantly been enhancing Photoshop with some magical new tools and commands, there are a lot of pretty awesome third party plugins that can perform some serious stuff that you still can’t achieve with Photoshop itself. Fortunately some of them are absolutely free.
Take a look at this list of excellent free Photoshop plugins that will let you achieve some cool special effects and image enhancement.
Via Kitty Fisher
If you are not sold on Adobe's new deal for Photoshop...the alternatives are actually pretty awesome.