Akvis has released NatureArt 1.0 (http://akvis.com/en/natureart-tutorial/effects/index.php) for Mac OS X and Windows. It’s a tool for imitating the magnificence of natural phenomena on your digital photos. You can choose from six nature effects: Rain, Sun, Water, Lightning, Clouds, and Fire.
In the future the program will learn new natural phenomena. NatureArt also lets you create nature scenes from scratch, such as converting a blank background into a sea view or a night sky with scattered, glistening stars.
Akvis NatureArt is available in two versions: as an independent program (standalone) and as a plug-in to a photo editor. Each is US$72. The plug-in version is compatible with Adobe Photoshop, Photoshop Elements, Paint Shop Pro, etc.
A demo is available for download. Also, Akvis NatureArt can be purchased as a part of the Alchemy bundle.