HttpWatch - 網頁讀取速度診斷工具，支援IE、Firefox瀏覽器及iPhone、iPad，網站或部落格常常加裝很多外掛程式，因為這些外掛大多屬於「外部連結」，一旦網站讀取速度卡住時，又無法確定是誰的問題，更難判斷是哪些外掛服務或程式卡到你的網頁載入速度，然而，利用此工具的HTTP連線分析、網站測速，不僅可以估算出回應的時間，還可以幫你揪出問題點！（阿榮）（下載）（購買）
阿榮評語：
[2008.12.14] Pingdom Tools，這個網站也可以線上測出網站中詳細的讀取速度。
HttpWatch is an HTTP sniffer for IE, Firefox, iPhone & iPad that provides new insights into how your website loads and performs.
HttpWatch is used in a wide variety of companies and industries for tasks such as:
* Testing a web application to ensure that it is correctly issuing or setting headers that control page expiration
* Finding out how other sites work and how they implement certain features
* Checking the information that the browser is supplying when you visit a site
* Verifying that a secure web site is not issuing sensitive data in cookies or headers
* Tuning the performance of a web site by measuring download times, caching or the number of network round trips
* Learning about how HTTP works (useful for programming and web design classes)
* Alowing webmasters to fine tune the caching of images and other content
* Performing regression testing on production servers to verify performance and correct behavior
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