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Opera is a web browser and Internet suite developed by Opera Software with over 200 million users worldwide. The browser handles common Internet-related tasks such as displaying web sites, sending and receiving e-mail messages, managing contacts, chatting on IRC, downloading files via BitTorrent, and reading web feeds. Opera is offered free of charge for personal computers and mobile phones.
Opera is the most popular desktop browser in some countries, such as Ukraine. Opera Mini, which is the most popular mobile web browser as of May 2011, has been chosen as the default integrated web browser in several mobile handsets by their respective manufacturers.
Features include tabbed browsing, page zooming, mouse gestures, and an integrated download manager. Its security features include built-in phishing and malware
protection, SSL/TLS encryption when browsing HTTPS websites, and the ability to delete private data such as HTTP cookies. Opera has been noted for originating many features later adopted by other web browsers.
Opera runs on a variety of personal computer operating systems, including Microsoft Windows, Mac OS X, Linux, and FreeBSD. Opera editions are available for devices using the Maemo, BlackBerry, Symbian, Windows Mobile, Android, and iOS operating systems, and Java ME. Approximately 120 million mobile phones have been shipped with Opera. Opera is the only commercial web browser available for the Nintendo DS and Wii gaming systems. Some television set-top boxes use Opera. Adobe Systems has licensed Opera technology for use in the Adobe Creative Suite.