itcoderr

This plugin gives you a way to choose what widgets display on each page/post of your website. The plugin’s custom sidebars provides a way, using that you can display custom widget configurations on any page, post, post type, or archive page.
Features
<ul>
<li>Unlimited custom widget configurations</li>
<li>Custom widget for individual post, page etc..</li>
<li>Sorting sidebar</li>
<li>Many more</li>
</ul>

Acquaintsoft sidebar generator

Create custom widget configurations for every page/post on your website.

rightmessage

RightMessage helps online businesses grow their list faster and generate more sales through survey funnels and personalized calls-to-action (CTAs).
This plugin makes it easier for those of us who use WordPress, by:
<ul>
<li>automatically installing your RightMessage snippet into your WordPress site</li>
<li>giving you segmentation options in your RightMessage account like “Current Post” and “Visitor’s Favorite Category”</li>
<li>giving you shortcodes for inserting embedded forms and trigger links for opening other kinds of forms</li>
<li>automatically appending a personalized opt-in form at the bottom of all your blog posts, if you want</li>
</ul>
<h3>Privacy</h3>
This plugin relies on the third-party service RightMessage to integrate personalized calls-to-action into your website. Data is sent to RightMessage when the plugin is activated and configured. For more information, please review <a href="https://rightmessage.com/privacy" rel="nofollow ugc">RightMessage’s Privacy Policy</a> and <a href="https://rightmessage.com/terms" rel="nofollow ugc">Terms of Service</a>.

Acquaintsoft sidebar generator vs RightMessage WP