Wysiwyg

Allows the use of client-side editors to edit content. It simplifies the installation and integration of the editor of your choice. This module replaces all other editor integration modules. No other Drupal module is required.

The Wysiwyg module supports any kind of client-side editor including HTML editors (a.k.a. WYSIWYG), pseudo-editors (buttons to insert markup into a textarea), or even Flash-based applications. The editor library must be downloaded separately. Various editors are supported (see below).

The Wysiwyg module also provides an abstraction layer for other Drupal modules to integrate with any editor. This means that other Drupal modules can expose content-editing functionality, regardless of which editor you have installed.