Arefly

Do you need to post some notice on your blog?
With this plugin, you can simply add a Notification Bar to your blog’s Header!
You can custom the text of the Notification Bar and the Link & Text of the “See Now!” Button.
There is also a button with “Close” and you can set the re-notice time in option page of the plugin.
Note: The Notification Bar’s style gets from Google.
Live Demo: <a href="http://demo.arefly.com/wordpress/" rel="nofollow ugc">Click Here</a> (See Header of the blog.)
<h4>Translators</h4>
<ul>
<li>Chinese, Simplified (zh_CN) – <a href="http://www.arefly.com/" rel="nofollow ugc">Arefly</a></li>
<li>Chinese, Traditional (zh_TW) – <a href="http://www.arefly.com" rel="nofollow ugc">Arefly</a></li>
<li>English (en_US) – <a href="http://www.arefly.com" rel="nofollow ugc">Arefly</a></li>
</ul>
If you have created your own language pack, or have an update of an existing one, you can send <a href="https://codex.wordpress.org/Translating_WordPress" rel="nofollow ugc">gettext PO and MO files</a> to <a href="http://www.arefly.com/about/" rel="nofollow ugc">Arefly</a> so that I can bundle it into WP Header Notification. You can download the latest <a href="https://plugins.svn.wordpress.org/wp-header-notification/trunk/lang/wp-header-notification.pot" rel="nofollow ugc">POT file</a>.

WP Header Notification

Add a Notification bar similar to Google in your blog's header.

wpnaga

WP Sticky Header is the plugin to display some content/notification bar on top or bottom of the pages. It can be closed and the colour of the background and text colour can be modified. Notification bar can be shown on all pages or only in home page or in all posts or in selected pages / posts. Once installed and activated, settings menu will appear on the dashboard. One can customize the notifications bar. Auto close option is also available.

WP Sticky Header

Plugin to display some content/notification on top/bottom of the webpage.

WP Header Notification vs WP Sticky Header