The secret thing about PVS-Studio
There exists the PVS-Studio code analyzer. It integrates into the Visual Studio 2005/2008/2010 environment and allows you to detect errors in C/C++/C++11 programs (see samples of errors it can detect). Regarding its advantages, we can note usability, detailed documentation, on-the-fly analysis and the best diagnostics of 64-bit errors.
The reason for the secret
Unfortunately, being one of the PVS-Studio's creators, I'm sad about the number of the distribution package's downloads from the site. They are very few. I see the reason: people are accustomed to thinking that it's not so easy for a programmer to try a commercial analyzer. You have to deal with the commercial manager at first and only then you might be allowed to get the demo version. I think many people even don't try to visit the Download page waiting to see a huge fill-in form or a message kind of "if you want to try, write to us".
We don't approve this method. We believe that a person should be able to easily try and purchase a software product. Our opinion completely coincides with the one of Alex Payne who has written the article "How Not To Sell Software in 2012".
The secret thing about PVS-Studio is that nobody knows that you can easily try and purchase it. Moreover, PVS-Studio can be used for free at first. The version you download from the site is completely full-function!
The demo version's restrictions will only occur when you have fixed 100 errors in your program using our tool. If your project is small or contains just a few errors, you will be able to use PVS-Studio without purchasing a license. But if you have fixed 100 errors in your program with PVS-Studio, it's fair that you buy a license to go on eliminating both old and fresh errors.
Download and try PVS-Studio: http://www.viva64.com/en/pvs-studio/download/