Secunia Software Inspector - makes sure your applications are uptodate.

Secunia Software Inspector does a great job in detecting all your software applications, Microsoft patches, and other programs are updated and secure. You can check your system either online or you can download the program Secunia PSI. This is an excellent program in my opinion and very much needed. I was amazed at how many insecure applications I had. It saved me an enormous amount of time to individually find the applications/programs and update them. Definitely recommended.

Link: Secunia Personal Inspector