Many users have such experience that after downloading or buying a software product, it does not work well as you anticipated. However, it is lucky to some extent because many other users download malicious software applications from Internet directly. Those problems cause people to think carefully and seriously about reputation of software. As it is said, the software reputation is very important for users to buy or use software applications, especially for those people who have very few knowledge of computer technologies. Many researches provided various kinds of technical methods to verify whether a software product has good reputation or not. This paper mainly focuses on software reputation research based on user experience.