Toscanalyzer 

Product: Toscanalyzer 
Company: Dynamusic
Website: www.toscanalyzer.org
Type: Free
Requirements: Windows XP/Vista/7

Toscanalyzer gives you all the support you need to make your mix or master better. It is not only a analysis tool but a complete guide to understand why your song sounds as it sounds. And it supports you in a way that you can easily fix the most critical issues easily.

Toscanalyzer lets you compare audible and visually your project to any reference songs in a very convenient way. Toscanalyzer offers a clear project view including many options to analyze. The analysis gives you a detailed report about possible problems and in addition a clear guidance how to fix it.