Sutherland Boswell

Import your latest Google+ activity into your site as posts. Currently supports most types of activity on Google+ with more options coming soon.
This is an early version so use wisely. Please let me know about any bugs or requests.
<h3>Roadmap</h3>
This plugin is currently in its early stages, so send your feedback or ideas to sutherland.boswell@gmail.com and I’ll keep them in mind as development continues. Look for frequent updates, new features, and bugfixes.

Google+ Importer

Automatically create new WordPress posts from your activity on Google+ using Google+ Importer

ajitae

Google Plus Plugin for WordPress allows you to Add Google Plus Widgets, Google Api Console required. 
Simple and fast, just paste your google plus profile ID under “GP Dashboard” Option Page after installed.
Google Plus Plugin Features
<ol>
<li>Google Plus Stream</li>
<li>Google Plus Profile</li>
<li>Google Plus One</li>
</ol>

Google Plus

Google Plus Plugin for WordPress allows you to Add Google Plus Widgets, Google Api Console required.

Google+ Importer vs Google Plus