Changes

curl and httpie are two extremely useful tools for analyzing what is happening at the HTTP level. You may also want use things like  ===== Firefox Web Developer ===== * [https://developer.mozilla.org/en-US/docs/Tools/Network_Monitor Firefox Network Monitor] (built-in from version 23)* [https://addons.mozilla.org/fr/firefox/addon/firebug/ Firebug Add-on] ===== Others ===== * [http://curl.haxx.se/ curl] (CLI)* [http://httpie.org/ httpie] (CLI)* [http://www.opera.com/dragonfly/ Opera Dragonfly] (Presto)