lstelie

This plugin is devoted to weblogs several years old. Visitors comming through search engines can land on a post that is several years old. 
Old posts were very likely great by the time they were poublished, but can be out of date or even wrong by the time they are read several years later. 
As a lot of people don’t read the post date, this plug in alert them that the post is old. 
wp-oldpost is a good complement to plugins like “related post”, “archives” and so on. 
In its current form the plugin is very rough, no admin, fix periods (one year/more than 6 months)…

WP OldPost

Visitors to your site are noticed if the post is old, and are invited to use either archives or the search function.

SeedProd

John Turner

A quick and easy notification bar and call to action for your site.
<ul>
<li><a href="https://www.seedprod.com/wordpress-notification-bar/?utm_source=wordpress-notification-bar-plugin&utm_medium=banner&utm_campaign=wordpress-notification-bar-link-from-wordpress.org" title="Notifification Bar Pro Version" rel="nofollow ugc">Upgrade to the Notification Bar Pro Version Now! »</a></li>
</ul>
<h3>Benefits, Features and Options:</h3>
<ul>
<li>Quick & easy setup</li>
<li>Custom message and call to action button</li>
<li>Sticky Notification Bar</li>
<li>Choose any color to match your site</li>
<li>i18n Support</li>
<li>Multisite Support</li>
</ul>
<h3>Pro Version Features</h3>
<ul>
<li>All the Free Features Plus…</li>
<li>Create Unlimted Bars per Site</li>
<li>Capture Email Leads</li>
<li>Custom Countdowns</li>
<li>Social Media Icons</li>
<li>More Color Options</li>
<li>Google Fonts Support</li>
<li>Support</li>
<li>
Plus Much More…
</li>
<li>
<a href="https://www.seedprod.com/wordpress-notification-bar/?utm_source=wordpress-notification-bar-plugin&utm_medium=banner&utm_campaign=wordpress-notification-bar-link-from-wordpress.org" title="Notifification Bar Pro Version" rel="nofollow ugc">Upgrade to the Notification Bar Pro Version Now! »</a>
</li>
</ul>
Included Translations:
<ul>
<li>Czech(cz_CZ) by <a href="http://lukasprelovsky.sk" rel="nofollow ugc">Lukas Prelovsky</a></li>
<li>Danish(da_DK) by <a href="http://alexanderleohansen.dk" rel="nofollow ugc">Alexander Leo-Hansen</a></li>
<li>German(de_DE) by Daniel Hoffmann</li>
<li>Indonesia(id_ID) by <a href="https://tarjiem.com/" rel="nofollow ugc">Ridha Harwan</a></li>
<li>Persian(fa_IR) by <a href="http://rushearn.com" rel="nofollow ugc">rushearn</a></li>
<li>Turkish(tr_TR) by <a href="http://hakanertr.wordpress.com" rel="nofollow ugc">Hakan Er</a></li>
<li>Russian(ru_RU) by Alexander Samsonov</li>
<li>Slovak(sk_SK) by <a href="http://lukasprelovsky.sk" rel="nofollow ugc">Lukas Prelovsky</a></li>
<li>Swedish(sv_SE) by <a href="http://comclick.se" rel="nofollow ugc">Tobias</a></li>
</ul>

WordPress Notification Bar

I have been using a notification bar plugin with just 1000 downloads and I decided to change to something that has more downloads thinking it would have more featured. But this plugin barely has any options unless you get the PRO version. I'm not sure why the others have given it 5 stars. It barely has any options.

Awful looking and very limited

A quick and easy notification bar and call to action for your site.

WP OldPost vs WordPress Notification Bar