Firebug是Firefox下的一款开发类插件，现属于Firefox的 五星级强力推荐插件之一。它集HTML查看和编辑、Javascript控制台、网络状况监视器于一体，是开发JavaScript、CSS、HTML和 Ajax的得力助手。Firebug如同一把精巧的瑞士军刀，从各个不同的角度剖析Web页面内部的细节层面，给Web开发者带来很大的便利。
该版本改进内容：
- The exception variable (passed into a catch block) is now listed in the Watch side panel automatically when you debugging an exception. issue 3122
- Chromebug can be used to inspect anonymous XBL again. issue 3492
- window.localStorage and window.sessionStorage members are now properly displayed in the DOM panel and showing the current content. issue 3611
- Layout for URLs displayed in the Net panel improved so, available horizontal space is fully utilized. issue 3633
同时发布的还有 Firebug 1.7a6 + Chromebug1.7a6
