We are starting an action of providing Microsoft MVPs (Microsoft Most Valuable Professional) with free twelve-month PVS-Studio licenses. If you are an MVP, just write us a letter (support@viva64.com) with the word "MVP" in the letter's heading and also specify your full name. The license allows you to use PVS-Studio for 12 months without any restrictions, including use for commercial purposes.
Please, read about changes in trial-mode which allow using PVS-Studio without license.