WordPress Mobile Plugin is very cool. It can switches into mobile theme when it open with mobile device.
IamMobiled Mobile Plugin enables your mobile users to see a mobile theme of your website. Comes with a mobile specific theme “Blue Heart”.
This Plugin detects mobile browser and display the theme as the setting done from admin. Usefull for switch to Mobile Theme.
WPtouch: A simple, powerful and elegant mobile theme for your website.
The WordPress Mobile Pack is a complete toolkit to help mobilize your WordPress site. It has a mobile switcher, themes, widgets, and mobile admin pane.
WP Mobile Detector automatically detects standard and advanced mobile devices and displays a compatible wordpress mobile theme.
MobilePress is a WordPress plugin that will render your WordPress blog on mobile handsets, with the ability to use customized mobile themes.
Wapple Architect Mobile Plugin for WordPress is a plugin that allows you to mobilize your blog in minutes.
Weever Apps: Turn your site into a true HTML5 ‘web app’ for iPhone, Android and Blackberry – weeverapps.com
WPtap is a WordPress specialist in developing mobile-friendly themes/plugins that can instantly turn your WordPress site into a web-application experi
10. OMFG Mobile Pro
OMFG Mobile – Easily create, manage and deploy unlimited mobile landing pages with WordPres.
Makes sites use the Carrington Mobile theme designed for mobile devices when visitors come to any site on your network with a mobile device