Imagenomic Noiseware Professional offers an easy and effective way to reduce noise in your images. Available in 'Standard' and 'Professional' versions as a Photoshop plugin for Mac and Windows, also as a Windows-only stand-alone version (and a Windows bundle of both Pro versions.) There is a free 'Community' edition - if you own a simple consumer digital camera, this may be all you need. Noiseware is relatively cheap and has the key advantages of ease of use and processing speed.