Pat Hawks

dirtysuds

You can use this to show posts from other sites on your homepage and in your archives alongside your own sites posts. 
After you activate the plugin, any post with the post type “Link” will redirect to the first link in that posts content.

Offsite Post

none

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.

Offsite Post vs Simple Social – Sharing Widgets & Icons Updated