Xpostulate is a blog/microblogging client that posts to Livejournal, InsaneJournal, IziBlog.net, DeadJournal, Scribbld, Inksome, Wordpress, and DreamWidth. It can tweet to twitter.com and dent to identi.ca so that you can announce new articles. This is all done via one interface, saving your login information for each, and thus simplifying cross-posting to your various social networking sites.
UserAgent Theme Switcher is a simple plugin that lets you change the theme to be displayed according to the detected browser. It checks from a predefined list useragent so that the user can at will change the theme shown for that browser. For example, a user can configure a special theme for mobile phones that is lighter and thus adapted to these devices. It is ideal for displaying themes ready for Opera Mobile, Internet Explorer Mobile, iPhone, Android, etc.
Jquery Slider Shock is a powerful slider extension which works with any website powered by WordPress or jQuery. It allows you to quickly and easily enrich your site's content by adding text, images, audio, or video from both local sources and external ones such as Flickr or YouTube.