Tomorrow, after much excitement, Apple will officially launch OS X 10.8 Mountain Lion for $19.99 to the public on the App Store. A new operating system certainly brings a ton of new features. However, there is always the lingering possibility that your favorite app may not be compatible. Just before the launch of Lion last year, we told you about a website called RoaringApps. As Mountain Lion is unleashed from its cage tomorrow, here is a little reminder on exactly why RoaringApps is so useful.

RoaringApps is a free website that allows you to check the compatibility of your apps with Mountain Lion. The website provides a long table of apps (it is a ton) that displays what apps are supported on the new OS X and whether the app is available on the App Store. If you are planning to upgrade to Mountain Lion tomorrow, this is definitely a website worth checking. The website organizes apps by name, and it has a search function to make things easy. [RoaringApps]

On a related note, how many of you plan to purchase Mountain Lion tomorrow? Is anyone holding off?