Now and then, the giant software wholesaler do something that their customers are locked into the proprietary products they put on the market. Some may think that because of the enormous amount of licenses and certifications, that’s why others are completely switching to Linux. One should not shift it’s gear yet merely because of the benefit of open source revolution. Open-source application is still lacking of something and so far the most popular open source Windows program are the free Mozilla and Firefox browsers. Aside that it is still running in Microsoft’s Internet Explorer, Mozilla and Firefoz are substitute browsers that anyone could use.