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。下载:Opera 9.64 Build 10487 Final

Changes in Opera 9.63:
User Interface
* Added opera:config > UserPrefs > DoubleclicktoCloseTab to close tabs by double-clicking on them

Mail, News, Chat
* Added a thread button in the mail toolbar
* Removed Label button from mail toolbar
* Reverted the Subject field back to its previous behavior where it is a text field and not a button
* Added shortcuts for follow (Ctrl/Cmd-D), ignore (Ctrl/Cmd-Shift-D) and go to thread (D)

Security
* Manipulating text input contents can allow execution of arbitrary code, as reported by Red XIII. See our advisory.
* HTML parsing flaw can cause Opera to execute arbitrary code, as reported by Alexios Fakos. See our advisory.
* Long hostnames in file: URLs can cause execution of arbitrary code, as reported by Vitaly McLain. see our advisory.
* Script injection in feed preview can reveal contents of unrelated news feeds, as reported by David Bloom. See our advisory.
* Built-in XSLT templates can allow cross-site scripting, as reported by Robert Swiecki of the Google Security Team. See our advisory.
* Fixed an issue that could reveal random data, as reported by Matthew of Hispasec Sistemas. Details will be disclosed at a later date.
* SVG images embedded using  tags can no longer execute Java or plugin content, suggested by Chris Evans.
* Opera now imports .p12 private certificates