Janar

<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.

Hendrik Schuster

<p>Dynamically create, populate and advice individual sidebars for any post, page or attachment.<br />
Adds a field in the post editor for choosing or creating a new sidebar. You can find a additional default sidebar option in the ‘general options screen’ of your wordpress installation.</p>
<h4>To Do</h4>
<ul>
<li>Add a option to inherit custom sidebars.</li>
<li>A better sidebar handling to create and remove sidebars.</li>
<li>Better translations.</li>
</ul>
<h4>Languages</h4>
<ul>
<li>English (default)</li>
<li>German</li>
<li>…</li>
<li>Send me your translation files!</li>
</ul>


DD – Flexible Sidebars

Choose a custom sidebar for each post, page or attachment. Create and advice additional Sidebars for any post-type (post, page, attachment, ...).

ax-sidebar vs DD – Flexible Sidebars