Janar

One post widget

Show recent post in widget area so the widget title/content itself is given post title and contents. You can choose queue which post to show from recent posts or just give specific ID.

<p>With this plugin you can add extra HTML or just plain text when posting a new page or post. That content will be displayed in sidebar widget. It is tested from WP 2.6 to 3.0.1.</p>


ax-sidebar

With this plugin you can add extra HTML or just plain text when posting a new page or post. That content will be displayed in sidebar widget.

One post widget vs ax-sidebar