Opera is a free Web browser with a pop-up blocker, multiple-window navigation, mouse gestures, keyboard shortcuts, an e-mail client with a spam filter, and integrated search for user security and speed. The cross-platform browser includes IRC-compatible chat, support for RSS newsfeeds, a password manager, and one-click customization and privacy-protection settings.
Among the many new features in Opera 9 are widgets, which are small Web applications (multimedia, newsfeeds, games and more) that make your desktop experience more fun. BitTorrent is now integrated into the browser, eliminating the need for a separate client. Content can be blocked by user preference, and search engines can likewise be customized. Hovering over tabs provides a thumbnail preview for easier navigation. Site-specific preferences allow you to apply different rules for individual sites.
The beta 2 version includes tweaks to widgets, BitTorrent support, and RSS newsfeeds.