Improvements in the usability of open source software do not necessarily mean that such software will displace proprietary software from the desktop; there are many other factors involved, e.g. inertia, support, legislation, legacy systems etc. However improved usability is a necessary condition for such a spread. Interacting with buggy software will be a cooperative problem solving activity of the end user, the system, and the developer.’ For some open source developers this is Already true, expanding this situation to (potentially) include all of the end-users of the system would mark a significant change in software development practices.

The open source software’s are having a very big market shares . Most commonly used web server is Apache Which comes with GNU Public Licence and is number one web server. Also big part of web development is under open source technologies such as : PHP programming language , Mysql database. In case of operating system LNUX operating system is much popular used network operating system