Amie

This widget replaces the standard Blogroll widget, and adds the following features:
<ul>
<li>API compatibility, so the widget matches the theme</li>
<li>Respects options set in the Links Manager Admin Panel</li>
</ul>

WPW-Linkslist

A flexible replacement for the standard links widget, for wordpress 2.0.x only.

Vladimir Prelovac

Live Blogroll will make your blogroll livelier. It will show a number of ‘recent posts’ for each link in your Blogroll using Ajax.
When the user hovers the mouse above the link, RSS feed from the site is automatically discovered and a number of recent posts is shown dynamically in a box.
Live BlogRoll uses internal caching for feed discovery and WordPress caching for RSS feeds to make sure everything is smooth for the user.
The looks of the hover box are fully customizable with CSS, and the position is editable in the options.
Plugin by <a href="http://www.prelovac.com/vladimir" rel="nofollow ugc">Vladimir Prelovac</a>.
<h3>License</h3>
This file is part of Live Blogroll.
Category Search is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
Category Search is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with Category Search. If not, see <a href="http://www.gnu.org/licenses/" rel="nofollow ugc">http://www.gnu.org/licenses/</a>.

Live Blogroll

Shows a number of 'recent posts' for each link in your Blogroll in a popup box, using Ajax.

WPW-Linkslist vs Live Blogroll