Skysa

Alert your website visitors when you have an announcement for them. The Announcements app allows you to add announcement notices which can display automatically for people who have not yet viewed that announcement. Set how long you want each announcement you add to display and have multiple announcements active at a time.
http://www.youtube.com/watch?v=Zj1uGXX2xrk&hd=1 
<a href="https://wordpress.org/extend/plugins/tags/skysa-apps" rel="ugc">More Skysa App plugins</a> -|||- <a href="https://wordpress.org/extend/plugins/skysa-official/" rel="ugc">Skysa App Bar Integration plugin</a>

Skysa Announcements App

Post pop-up ajax announcements for your site visitors. Rich content, announcement experation date and many other announcement options.

Skysa Bar apps are self-contained apps which work with the Skysa bar. If you do not have your own Skysa App Bar integrated with your site, they will pull in a basic one for you so that the apps load correctly. If you do integrate your own Skysa App Bar with your site, your Skysa Bar apps will work with it instead, allowing you to configure all the features that the full Skysa App Bar service provides.
This plugin includes the most recent version of the <code>skysa-required</code> directory which is required for the any Skysa Bar app plugins created with this SDK. Additionally, this plugin includes examples of working Skysa Bar apps which are fully documented to show exactly how to build a Skysa Bar app yourself.
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<h4>Note</h4>
This plugin is intended only for WordPress plugin developers to enable the creation of production WordPress plugins; it is not intended to be run in a production environment itself.
</blockquote>

Skysa App SDK

Software Development Kit for creating standalone Skysa Bar apps for WordPress.

Skysa Announcements App vs Skysa App SDK