SMSer is really easy to use widget which allows you or your clients to send a text messages to cell phones world wide from your Wordpress web-site. You can paste your advertisement text like signature and it will be shown at the end of each sent SMS or leave a field empty. Example: This SMS sent from /yoursite.com/. You can lock SMSer on one country or select /No limits/ to allow sending worldwide. You can fix the limit for SMS message size. At this moment, SMSer supports 12 languages of interface: English, Spanish, Germany, French, Italian, Portuguese, Finnish, Norwegian, Russian, Hebrew, Turkish, Swedish.

PluginBuddy Mobile is a professional WordPress plugin that allows you to easily build an iPhone version of your site in minutes using the built-in style manager, mobile-ready themes and custom header uploader. Mobile is ideal for developers who could offer special mobile design packages to your clients …. and of course, for those of you who want to be the hip kids on the block and have your own iPhone site version.

One Theme is a cutting-edge wordpress plugin that instantly turns your site into a smartphone friendly experience. Create your brand and choose from over 16 color schemes in seconds.

The WordPress Mobile Pack is a complete toolkit to help mobilize your WordPress site and blog. It includes a mobile switcher to select themes based on the type of user that is visiting the site, a selection of mobile themes, extra widgets, device adaptation and a mobile administration panel to allow users to edit the site or write new posts when out and about.

WPtouch Pro is a WordPress plugin which adds powerful, easy-to-use features to WordPress for mobile + tablet theme support. It's also a powerful theming framework, perfect for creating awesome mobile & tablet optimized versions of websites.