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。
Changes in Opera 9.50 Build 10034 Beta:

WARNING: These are development snapshots: they contain the latest changes, but they also have severe known issues, including crashes and data loss situations. In fact, they may not work at all.

Known issues:
* Dragonfly does not work when JavaScript is disabled.

Changelog:
* Downloads should work better now
* Fixed bug where you could not open attachments in mail with unknown MIME type
* Rendering improvements to CJK text
* Reduced memory usage
* Fixed a print preview crash
* Fetching feeds now times out correctly
* Importing mail from mbs files no longer creates tons of filters on Windows
* Improved display of unselectable IMAP mailboxes
* No longer expunge mail marked as read in trash
* Added ability to use favicon for Dragonfly
* Polishing the integrated Dragonfly
* Fixed crash when having user CSS and using Dragonfly
* Added bookmark title and URL to the address bar auto-completion
* Improved matching of URLs in the address bar drop-down
* Fixed downloading of ISO files from FTP servers
* Fixed Wand logins where the submit button was initially

官网：http://www.opera.com

Opera v9.50 Build 10034 Beta：
Windows Classic：http://snapshot.opera.com/windows/o950s_10034.exe
Windows MSI：http://snapshot.opera.com/windows/o950s_10034m.exe