A plugin that provides a warning box with a ton more options completely re-written from the ground up.
Show a warning message when your blog visibility is blocked for search engines. Also, hides the de-indexing option.
Alert me with a nice message! Just like that! Alert generator plugin. Generates a slick CSS3 alert bar (info, warning, success, error). Use it by inse
This plugin informs website visitors to update their out-dated browser in an unobtrusive way.
A WordPress plugin that simply disables error reporting and error logging for all plugins.
Tell IE users to change browser? Or is your site for Chrome only? Now you choose what browsers should trigger a warning popup or not on your site.
This plugin appends a notice/warning along with a credit link from the original source, to any content that is illegally copied from your site.
Displays a message at the top of single posts published x years ago or earlier, informing about content that may be outdated.
Plugin to encode/decode and display content using the ROT13 cipher.
Special Box for Content
This plugin uses AJAX & Thickbox to display a dialog based Content Warning to users, requiring them to acknolwedge they are at least 21 years old
Extreme Advanced debugging plugin for seeing the verbose of the verbose debug info. Tech Support, Server Admins, WordPress Developers, Plugin Develop
Simple plugin to show notifications, warnings and alerts inside your posts
iedetect detects the Internet Explorer and show a warning message if it's an old version.
Airbrake collects errors created by WordPress and it's plugins.
EMC2 Alert Boxes make a great way to notify your visitors of anything!
A SMALL popup with customizable message about the avaliablity of a free OS replacement for Windows, and Mac.
With this plugin you can warn other wp-admin users. For example, you can type “Don’t touch widgets! I’ll fix it tomorrow !”
EMC2 Popup Disclaimer places a specified post into a lightbox and adds buttons so that your visitors must click through to agree to your terms!
Adds the ability to create easily notification in the admin panel
Do you wanna inform any important news or message to your readers ? You can use this plugin.
Display a configurable warning for some versions of Internet Explorer
This plugin add a "warning button" at the bottom of your content to send notification to the administrator.
A browser dependent message, explaining the risks of using IE6 and providing download links to a recent browsers.
Adds a warning at the top of each page visible to users that are still using Internet Explorer 6.
IE6 Warning message. Help the web getting ride of IE6. Based on "Shockingly Big IE6 Warning" plugin by mschertel
This plugin uses AJAX & Thickbox to Display Dialog based Content Warning to Users. This act as Landing page to show message.
With this plugin, an notification can be added to old posts.