i like this tool for the fact that it can scan your computer, find vulnerabilities in any installed software or even uninstalled programs as well!it's easy to use.
you dont have to install anything if u are using home version of secunias product; its free!!you should give it shot!! there is nothing much bad about it but it dosent detect all vulnerability so sometimes when u get warnings saying some vulnerabilty was detected which doesnt exist atall, thats what we call false alarming. its great solution and very useful since you don't need antivirus anymore.