Opera 是来自挪威的一个极为出色的网络浏览套件，具有速度快、节省系统资源、定制能力强、安全性高以及体积小等特点，目前已经是广受欢迎的浏览器之一。多文档接口 (MDI)、方便的缩放功能、整合搜索引擎、快捷键与鼠标手势、浏览历史记忆、防止 恶意弹出窗口、全屏模式、对 HTML 标准的支持、整合电子邮件与新闻群组以及让用户自定义按钮、皮肤、工具栏等等，都使 Opera 多年来倍受喜爱。
What's New
Known issues:
• Dragonfly does not work when JavaScript is disabled.
• Dragonfly doesn't work on Mac.
• Save Linked Content As fails sporadically.
• Marking messages Unread in the Trash view will actually permanently delete them.
• Text selections don't draw correctly in Opera Mail and MHTML documents.
Changelog:
• Fixed Opera icon in add/remove programs in Windows Vista
• Startup is now a lot faster when having many bookmarks
• Made http authentication work in Widgets again
• UNIX: Fixed wrong dependency on libqt3-mt in static deb packages
• Check spelling item is grayed out when mouse cursor is not over textarea
• Better handling of local cookies
• Progress bar briefly appears below address bar while loading sites with an iframe
• Image title isn't displayed in tooltip when the image is a link
• Fixed the missing tag list on del.icio.us
• Fixed an issue with pages that never finished loading
• Fixed a jQuery/Backbase regression
• Fixed display of Japanese file names in Mail
• Fixed an issue where clicking an input type=image fired click then blur
• Fixed "match whole word only"
• caused onblur event
• Fixed search completion on Facebook
• Password not sent for NNTP accounts
• Check spelling item is grayed out when mouse cursor is not over textarea
• Mac: Fixed Wand shortcut after going back in history
• Mac: Fixed the look of input type=number controls
• Mac: Fixed dropdowns in Appearance dialog (and a few other places)
官网：http://www.opera.com
Opera v9.50 Build 10024 Beta：
Windows Classic：http://snapshot.opera.com/windows/o950s_10024.exe
Windows MSI：http://snapshot.opera.com/windows/o950s_10024m.exe
Macintosh build 4839：http://snapshot.opera.com/mac/o950s_4839.dmg
Unix Systems - build 1992：http://snapshot.opera.com/unix/snapshot-1992/