Instant Source - the first real-time HTML source viewer and editor.

我一般使用View Source 命令来看源代码， 今天发现的这个IE plugin 能够提供更好的功能，兼容浏览器: IE 5,6,7。Instant Source可以让你查看源码， 并可以直接在上面修改。当鼠标指向或选择网页的某一部分，即可在下方的窗口中快速看到网页的源代码。

这是它的主要功能：
Features:
• You get the HTML of the page element as quickly as possible - just hover the mouse over it, or select it.
• HTML editing directly inside web browser.
• Enhanced View Source command replacement.
• Instant Source can display the HTML code that exactly matches the visible content of the page.
• It shows all external files on a page and lets you to save them with a one click.
• Handy HTML, Javascript and VBScript syntax highlighting.
• Easy real-time viewing of the cascade style sheets (CSS) and script files.
• Quick access. Click on the button on the Internet Explorer toolbar to invoke Instant Source.

看上去挺不错的，获得了挺多奖项的。可惜是收费的， 还好， 费用不高。有21天的试用期。如果你经常需要做IE的开发， 看起来是一个好工具。