Opera Browser v39.0 - Opera browser is everything you need to do more on the web. Now with a built-in ad blocker. Do more on the web. Opera, a free browser for Windows 10 and earlier versions, brings you more speed and safety on the web. Browse faster and longer. Opera's speed and performance are among our top priorities. The data-compressing Opera Turbo feature, native ad blocker and other features will help you browse faster.