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.

Rupok

Eity

An announcement plugin that shows your announcements/breaking news/offers/notice on top of the website. 
Stylish show of announcements will attract the eye of your visitors. Fully controlled by date. Best suitable for promotional offers, Notices etc.
Here you can get more information about this plugin – http://www.rupok.me/projects

Responsive News & Announcements

An announcement plugin that shows your announcements/breaking news/offers/notice on top of the website.

PingBlink – Floating Knowledge Base, Announcements & Offers Widget vs Responsive News & Announcements