With brand new capabilities for Sencha Touch 2, the SDK Tools can generate an app skeleton in seconds, create minified production-ready builds and even package your app for native app stores—all in one command.
The Sencha SDK Tools is an optional download that augments what the Ext JS and Sencha Touch frameworks can do out of the box. As well as generating and building apps, it can automatically slice CSS3-based themes into image files ready for IE6 and create HTML5 app cache manifests for your apps.
Installers are available for Windows and Mac OS X. Once installed, a new sencha command is accessible from your command line. Watch the Getting Started video to see how the SDK Tools can radically accelerate the development of your applications.
The Sencha SDK Tools are licensed under the SDK Tools License, and it covers the version of the SDK Tools it was downloaded with. View the SDK Tools License
Current SDK Tools

slicer — Creates images from CSS3-styled applications (based on headless WebKit rendering), and generates CSS for non-standards browsers like IE6.

JSBuilder — Combines and minifies JavaScript using YUI Compressor and a simple, JSON-based config file.
If you are looking for Sencha Cmd, refer to this blog here. Sencha Cmd is in beta and used to build Ext JS 4.1.1a and Sencha Touch 2.1.

