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Despite being feature-packed, Opera has a fairly small market share, due largely in part to being trialware up until 2000 and advertisement-supported until 2005—many people were turned off by the expense, if not the ads.The Ultimate List of Browsers chrisbowler on September 22nd 2009. The browser war has become one of the most heated debate over the Internet.IE 10: Each session has separate sessionStorage and localStorage.Firefox is created by a global non-profit dedicated to putting individuals in control online.