Skysa

Let a visitor share your pages and content with friends on Google Plus with this Google Plus One button which floats at the bottom of your pages on the Skysa App Bar. Google Plus is a social network which connects all people who have a Google account. When a user clicks a Google Plus One button on your site, they will not only share the page with their friends on Google Plus, but it will also affect Google search results for the shared page.
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 Google +1 App

A Google +1 button which you can configure to share any page on your site.

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 Google +1 App vs Skysa App SDK