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.

Tessa (they/them), AuRise Creative

sevenspark

Contact Form 7 – Dynamic Text Extension

With this great plugin, we were able to easily fulfil a customer's request for an extension. 
Thanks a lot

Great Plugin

Extends Contact Form 7 by adding dynamic form fields that accepts shortcodes to prepopulate form fields with default values and dynamic placeholders.

ax-sidebar vs Contact Form 7 – Dynamic Text Extension