Ultimate Coming Soon Page plugin allows you quickly and easily set up a coming update page for your website. It has includes some feature like completely customizable with background color and image, add custom CSS and HTML, collect emails, option to stretch background image according to browser etc.
WP Orbit Slider uses a custom post type and taxonomies to create slider group for per post or page.
Juiz Smart Mobile Admin plugin offers you a smartphone support for your dashboard.
Mobile BuddyPress theme optimized for viewing on mobile devices i.e. iPhone, iPod touch, Android and some Blackberry.
This plugin allows an image gallery pulled from the media library to be displayed using popular scripts such as Imageflow and FlexSlider.
The WordPress Mobile Pack has complete toolkit to make your WordPress site mobile friendly and compatible.
WordPress jQuery plugin make all videos on your page responsive using the FitVids jQuery plugin on WordPress.
WP Fluid Images adjust or resize the image attribute like height and width and make it responsive web design.
Responsive TwentyTen makes your TwentyTen themed site have a responsive and fluid layout using CSS and media queries. It is ideal and compatible for viewing across a whole range of devices and screen sizes.