endsoftdesign

Inserts Google + 1 Button in your site from the Dashboard. No code necessary!
You do not need to edit the theme. New GooglePlusOne is the easy way to insert the Google+1 in your site without have programming knowledges.
Features
Google + 1 will be added automatically in all your posts and pages. You can customize the place where the button will appear, by changing its position or by choosing another HTML element which will contain it.
Also, you can choose to have a single Google + 1 button in your site’s header.
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New GooglePlusOne

Inserts Google + 1 Button in your site from the Dashboard. No code necessary!

pastispractice

Add google +1, tweet, and/or fb like buttons to all posts.
All buttons functions and sizes can be controlled on plugin admin page.

plus twit like

Add google +1, tweet, and/or fb like buttons to all posts. All buttons functions and sizes can be controlled on plugin admin page.

New GooglePlusOne vs plus twit like