Upluggit

PingBlink is an all-in-one engagement widget that sits gracefully on the corner of your website. Instead of forcing users to navigate to separate pages for support, news, or promotions, PingBlink brings everything directly to them in a sleek, modern interface.
PingBlink is built using native WordPress custom post types, meaning it is 100% compatible with the Gutenberg block editor. You can build beautiful help articles and rich-text announcements using the editor you already know and love.
Major Features: 
* Knowledge Base (Help): Create and organize help articles. Users can search for answers instantly, reducing your support load. Includes built-in helpfulness voting (Thumbs Up / Thumbs Down) with analytics. 
* Announcements (News): Publish updates, new features, or company news. Users see a pulsing notification badge when new items are available, driving engagement. 
* Promotions (Offers): Run special promotions or discounts with dedicated cards to increase conversions. 
* Fallback Contact Form: If users can’t find what they need, they can easily send a message directly from the widget. 
* Built-in Analytics: Track independent views, clicks, and Click-Through Rates (CTR) separately for News and Offers, alongside simple helpfulness voting analytics for your Knowledge Base directly inside your WordPress dashboard. 
* Smart Visibility Rules: Control exactly who sees your News and Offers by restricting visibility to logged-in users, logged-out users, or everyone. 
* Customization: Choose your primary brand color, select from multiple trigger icons (Chat Bubble, Notification Bell, Megaphone, Sparkle), and position the widget on the bottom-left or bottom-right. 
* Zero Bloat: Lightweight JavaScript and CSS ensure your site speed remains lightning-fast.
<h3>Use Cases</h3>
<ul>
<li>Customer Support: Reduce support tickets by allowing customers to instantly search your knowledge base from anywhere on the site. If they can’t find the answer, the fallback contact form ensures you never lose an inquiry.</li>
<li>SaaS & Software Updates: Announce new features, bug fixes, or maintenance schedules in the News tab. Use the Logged-in Users visibility rule to display specific updates only to active users, while the unread notification badge ensures they actually see them.</li>
<li>E-Commerce Sales: Use the Offers tab to promote seasonal discounts or flash sales. You can leverage the Logged-in Users visibility rule to show exclusive discount codes to returning customers, the Logged-out Users rule to show a “Free Shipping” welcome offer to guests, and the All Visitors rule for general store-wide sales.</li>
</ul>

PingBlink – Floating Knowledge Base, Announcements & Offers Widget

A beautifully designed, lightning-fast widget for Help articles, Announcements, and Offers. Keep your users engaged without leaving the page.

codee47

The Apollo Bar is a really simple announcements and notification plugin. Used with Custom Post Type to publish announcements and a sort jQuery code to rotate messages with fade animation. The close button in the plugin information stored in a cookie, which the browser window is closed will be deleted.
There is a very simple administrative interface. Can be switched off and on the Apollo Bar, author logo and close button or you can choose the background and text color.
Available languages:
<ul>
<li>English</li>
<li>Hungarian</li>
<li>Turkish (Fatih Toprak)</li>
<li>Japanese (Akky Akimoto)</li>
</ul>
More translations are welcome.

Apollo Bar

Apollo Bar is a simple announcements plugin that allows you to create colorful notification bars for your website.

PingBlink – Floating Knowledge Base, Announcements & Offers Widget vs Apollo Bar