From now on you will not only find Wordpress stuff but also Drupal. If you have not yet put your hands on it.. we feel that its time for it. If you have already, you must have known that Drupal core functionality doesn't support Rich Text Editing for TEXTAREAs. Below are a few standard & popular Drupal WYSIWYG Text Editors.

YUI Rich Text Editor

This module integrates the YUI Rich Text Editor into drupal to edit content.

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TinyMCE

TinyMCE is a platform independent web based Javascript HTML WYSIWYG editor control released as Open Source under LGPL by Moxiecode Systems AB. It has the ability to convert HTML TEXTAREA fields or other HTML elements to editor instances. TinyMCE is very easy to integrate into other Content Management Systems.

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FCKeditor

This HTML text editor brings many of the powerful WYSIWYG editing functions of known desktop editors like Word to the web. It's relatively lightweight and doesn't require any kind of installation on the client computer.

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HtmlArea

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WYMeditor

WYMeditor is a lightweight XHTML/Javascript WYSIWYM (What You See Is What You Mean) editor

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widgEditor

widgEditor is an easily installed, easily customizable WYSIWYG editor for simple content.

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NicEdit

NicEdit is a Javascript/AJAX inline content editor to allow easy editing of web site content on the fly in the browser.