Particle Universe plugin
From Ogre Wiki
Author: Henry 'Spooky Boo' van Merode
Project: External Project (Particle Universe)
Type: OGRE Plugin and Editor
Supported Platforms: Windows
Documentation: Included in the package
Sources: http://www.fxpression.com
Particle Universe is a particle engine developed in C++, which can be used in Ogre. Create your own amazing effects using the advanced scripting possibilities and make use of the supplied presets and samples. The Particle Universe package includes an Editor, a plugin, API description and a Manual that helps you to easily create explosions, smoke, rain, snow, blood squibs, fire and more.
Unfortunately, Particle Universe isn't for free any more, but €9.95 is a really fair price for such a great and complete package.

