These allows you to add a notification bar to your website. With these plugins you can easily display custom Twitter posts, texts, and Feeds RSS. More Importantly lets you fully customize the notifications bar look to fit your need.
attentionGrabber: WordPress Notification Bar
Allow you to add and customize your notification bar.
WordPress Top Notifications
Add sticky top notifications to your website.
Specific Social Notification Bar
display notification bar on your website.
Nice Notifications – Responsive Alerts WP Plugin
Customize your social bars, alerts, notification bars, tweet rolls..