1. Sencha Touch
2. Phone Gap
3. jQuery Mobile
jQuery Mobile is a Touch-Optimized Web Framework for Smartphone & Tablets. It is a unified UI which remains constant across all platforms. The code is extremely lightweight and hence a preferred framework for mobile application development. Various themes that are available are easily moldable to designer needs and can be easily changed. Instead of writing different codes of various OS; jQuery lets you write a simple single code to produce a fully functional customized website app.
Titanium helps in cross platform development of apps. The apps created by Titanium are natively integrated. It acts as a bridge between the mobile application developer and the platform's API the output of which is a app that has a more native feel and better performance. Appcelerator's Titanium platform was designed from the offset to help web developers create mobile and tablet applications with ease. Over the last year, the platform has seen tremendous growth, and new features and devices are added at a fast pace.