Mozilla Firefox 1.0 web browser took the top spot on PC World's ranking of 100 best products for 2005.

Mozilla Foundation, a non-profit organization dedicated to preserving choice and promoting innovation on the Internet, announced today that PC World named Firefox its "Best Product of 2005".

Firefox is an open source web browser and according to the organization, its customizable features and ease-of-use has attracted many users. It also features a tabbed interface, better navigation, built-in Google taskbar, a pop-up blocker and Autodownload. These have added up to increase the browser's market share consistently in the past few months. According to WebSideStory, the U.S. browser usage of Firefox grew from 3.03 percent to 4.06 percent last december.

Mozilla's email client, Mozilla Thunderbird 1.0, also ranked high on PC World's list of top 100 product. Thunderbird's email sorting functions, spam filters and better performance than OutLook were cited as reasons for this.