Ext Designer 1.2 for Mac is available as a free download on our software library. The most popular version among Ext Designer for Mac users is 1.2. This software for Mac OS X is a product of Sencha. The program is categorized as Developer Tools. The bundle identifier for this application is com.sencha.ExtDesigner.
From the developer:
Ext Designer is a desktop application that helps you create interfaces faster than ever in an easy-to-use, drag-and-drop environment.
You may want to check out more software for Mac, such as TurboCAD Mac Designer, Branch Designer or Handheld Designer, which might be similar to Ext Designer.