oneline

A Simple plugin which adds a widget to your wordpress admin widget area which you can then assign to the side bar etc… features are as follows:
Allows you to set your user / social ID’s 
Allows you to switch from icons or text links 
Allows you to turn social button / links on or off
Supported Social Sites:
Facebook 
Twitter 
Linkedin 
RSS

Easy Social Share

A Simple plugin which adds a widget to your wordpress admin widget area which you can then assign to the side bar etc...

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fabiancz

This plugin adds a set of cool icons and widgets at the end of your post for your readers to share. Widgets are Twitter, Facebook and Google +1. It supports large icons and small icons.
This plugin is copy of “simple-social-sharing-widgets-icons”, because it’s not updated;

Simple Social – Sharing Widgets & Icons Updated

Adds a set of cool icons and widgets at the end of your post for your readers to share.

Easy Social Share vs Simple Social – Sharing Widgets & Icons Updated