YouCMSAndBlog WYSIWYG IDE is a free editor I have recently created. It aims to support Windows currently and Linux based environment soon. With this IDE, you can have interactive environment when designing your Joomla template. Easily inserting Joomla taglist by double clicking its supported list from listbox on the left side off the IDE. And you can modify the taglist or add new one easily by editing its XML config file. It s not only stopping here, but also allow you to define a new taglist base, i.e. Joomla 1.5 and other tag based CMS & Blog engine's templates. Other features for this early release (Version 1.0): * Interactive View through True View and Quick View mode while you edit your template * Easily switch to Full Editor mode (like UltraEdit IDE) if you prefer it working as normal text editor with Joomla tag list supported, Full View mode or Hybrid mode (Default mode) * Code Syntax Highlighting (Coloring), which you can configure from your main configuration file using Regular Expression * Find words with color highlighting * With Quick View, users will not need to install CMS or Blog Engine on their local machine, i.e: Blogger Template, user can download the template and open it using this IDE to get a dummy view easily. * With True View, user will get instant true view from your running CMS or Blog engine hosted locally. * Automatic back-up for all files you are editing but can be turned off. It currently also supports Wordpress 2.3 and Blogger, but easily you can create new template taglist and quick view to support other CMS template and blog template. Read the tutorial for maximal use of this IDE, still in early stage but a proof of concept to deliver a simple text editor to support multi CMS & Blog Templates. 

A WYSIWYG editor for Joomla 1.0.x based on the XStandard browser plugin.

XStandard is a standards-compliant plug-in WYSIWYG editor for browser-based content management systems. The editor generates clean XHTML Strict or 1.1, uses CSS for formatting, and ensures the clean separation of content from presentation. Markup generated by XStandard meets the most demanding accessibility requirements. XStandard Lite is free for commercial use and installs on Windows 98, ME, NT, 2000 or XP.

You have to manually install the browser plugin on the computer you use for editing before you can use this editor. Instructions can be found in the readme.txt in the zip-file. 

The JXtended XHTML Editor based on Codepress for Joomla! 1.5 native. Real-time syntax highlighting.

This is a WYSIWYG Editor based on FCKeditor for J! 1.5.
Features
• Outputs valid XHTML
• Paste from Microsoft Word cleanup with auto detection
• Right-click context menus for quick editing content elements
• Integrated content templates for both JXtended Magazine and JXtended Catalog.
• Extensions built natively for Joomla! 1.5 (legacy mode not necessary)
• 100% Open Source - released under the GNU General Public License  

JoomlaTinyFCK (JTF) is for those who trust WYSIWYG Editor chosen by Joomla Developer but need free and powerful image manager/uploader.

JoomlaTinyFCK is an editor mambot that utilize:
1. standard TinyMCE included in Joomla! CMS 1.0.12
2. FCKEditor file manager/uploader included in TinyFCK 0.13

JoomlaTinyFCK v0.1 features:
1. standard TinyMCE Joomla! 1.0.12 features and capabilities
2. file manager and uploader from FCKEditor v2.2
3. option to enable/disable AutoTypeSelection feature of FCKEditor file manager

Uploaded files will be located automatically at www.yourdomain.com/images/stories/{File|Image|Flash|Media}/{yourcustomfolder}

Been tested on Joomla! 1.0.12 and 1.0.13 and proved to be very stable!
Just make sure to use WWW prefix on Joomla Live Site for Joomla! 1.0.13.

Always with GNU/GPL License :p

Just install JoomlaTinyFCK like any other Joomla Mambots.
Details of installation procedure now available online! 

EasyTemplate is an extension for Joomla! 1.5 WYSIWYG editors who adds a new button to insert predefined Strings/Tags and/or Templates with a single click.
Now you can define your own HTML code and insert it with a single click - works in all editor that include editors-xtd plugins, or you can use Divs, Urls etc. just everything but scripts

CoderMCE is a Joomla editor for programmers, featuring a WYSIWYG syntax coloring source code editor for technical content and spell checking. It comprises TinyMCE and Maxime Lardenois' insertcode plugin. TinyMCE is a platform independent web based Javascript HTML WYSIWYG editor control. The insertcode plugin performs WYSIWYG source code editing and Geshi-based syntax coloring within TinyMCE.