Opera, known for its long-established web browser of the same name, is one of the most powerful browsers in the world. First publicly released for Windows back in 1996, Opera now supports most desktop and mobile platforms, including Windows Phone, iOS, and Android, where it provides not one but three different browsers in the Google Play Store for Android smartphones and tablets. It also has a version of the Opera browser for Android TV.
In the beginning Opera was trialware, intended to be purchased at the end of the free period, but Opera switched to an ad-supported version in 2000. Staying ad-supported until 2005 when it removed ads and instead made contracts with partners like Google, which became the default search engine in Opera. Opera and Google's Chrome browser, while competitors, have contributed to many of the same projects, including the Chromium Project, WebKit and Blink, to which both companies have drawn from and contributed code to.
Opera Mini was the first of Opera's mobile browsers, and the most widely available, optimized for small screens and small data caps. It then offered a more classic Opera Browser, with emphasis on speed and organization. Its third browser is Opera Max, a data-management-based browser that looks to dramatically trim the amount of mobile data you're using, perfect for users trying to squeak by on a tiered data plan. While not all browsers are available for all devices, Opera has presented users with choice. Users can also choose to contribute to the beta versions of Opera Browser and Opera Mini, which are hosted through separate Play Store apps rather than through the Play Store/Google+ beta community system.