Opera is a web browser and Internet suite developed by the Norwegian company Opera Software. The application is free since version 8.50, having previously been shareware or adware, and before its version 5.0, only for payment.
Is recognized for its high speed, security, standards support (especially CSS), small size, internationality and innovation. Implemented since its early versions the tabbed browsing, Speed Dial on the movements of the mouse for navigation, personalization site, and the thumbnail tabbed
Available for Windows, Mac OS X, GNU / Linux, OS / 2, FreeBSD and Solaris. In addition, two mobile version: Opera Mini (mobile singles) and Opera Mobile (and specific versions of payment for smartphones and handheld computers). Finally, is also present in the Nintendo DS and Wii game. It has also announced that the browser will be available for televisions and DVD players.
Currently has 23 million users citation needed and in February 2009 reached a rate of 0.71 used in the overall market for Web browsers.
According to statistics the market share of Opera is located, with a difference, behind Internet Explorer or Firefox. However it is important to mention that most of the users of its browser Opera mask and some other pages while still correctly identifying this browser.