内容管理系统中不可避免的会涉及到内容的在线编辑问题，这两天看了不少在线的HTML编辑器。我主要是从车东的内容管理系统(CMS)的设计和选型一文中提到的一篇文章TTW WYSIWYG Editors里面介绍的那些编辑器开始的。虽然文中列举了不少的编辑器，但是也没发现特别满意的。车东推荐的是aynhtml，但是我看了一下，发现它只支持Internet Explorer 5.5以上，并且已经停止开发了似乎(最新版本是2002年的)。我觉得在线编辑器的最重要的一个特性就是TTW WYSIWYG Editors一文中列出的cross platform特性，因为B/S相对与C/S的一个很大优势就在于B/S部署方便，如果编辑器强迫用户使用IE，那么这一优势也就荡然无存了。
于是自己又找寻和比较了一阵，最后感觉比较好的如下：
1 FCKeditor 
This HTML text editor brings to the web many of the powerful functionalities of known desktop editors like Word. It's really lightweight and doesn't require any kind of installation on the client computer.
As it is Open Source, you are allowed to use it for free wherever you want.
2 Kupu 
Kupu is a 'document-centric' open source client-side editor for Mozilla, Netscape and Internet Explorer. Inspired by Maik Jablonski's Epoz editor, it was written by Paul Everitt, Guido Wesdorp and Philipp von Weitershausen (and several other contributors, for a complete list refer to the CREDITS.txt file) to improve the JavaScript code and architecture, pluggability, standards support, support for other webservers than Zope (which was the original target platform for Epoz), configurability and a lot of other issues.
3 Cross-Browser Rich Text Editor
The cross-browser rich-text editor implements the Mozilla Rich Text Editing API included with Mozilla 1.3+. There is NO LICENSE, so just take the code and use it for any purpose. This code is 100% free. Enjoy!
Requires: IE5+/Mozilla 1.3+/Mozilla Firebird/Firefox 0.6.1+/Netscape 7.1+ for all rich-text features to function properly. If browser does not support rich-text, it should display a standard textarea box.
4 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 CMS systems.
推荐FCKeditor，是sourceforge.net上面最活跃的项目之一，功能十分强大，外观做的也很不错，还支持多语言，最重要的跨平台或者说跨浏览器也还不错。现在出到FCKeditor 2.0 RC2，就是bug似乎还多了一点，希望能尽快改善到稳定的可用版本。
部署FCKeditor时注意，如果部署为客户端Javascript的话，需要：
1. 修改fckeditor.js中的BasePath变量为editor目录所在的目录路径。
2. 调用页面中可以参照_samples目录里面的例子，不过也需要将页面中JavaScript的调用的BasePath做如上更改。同时，页面中的css样式表的路径要使用绝对路径(这个我在一般打开时相对路径可以用，但是部署为Struts应用时就不行了，改成绝对路径才可以，不知道为什么还，应该是和Struts有关)
收集几个所见即所得在线编辑器
先记下，以后有用得着的时候也好找。
所见即所得(WYSIWYG - What You See Is What You Get)
1、eWebEditor[Mode In China]
简介：
eWebEditor是eWebSoft.com旗下eWeb团队开发的基于网页的、所见即所得的在线HTML编辑器。她能够在网页上实现许多桌面编辑软件（如：Word）所具有的强大可视编辑功能；她是一个真正的绿色软件，不需要在计算机上安装任何的客户端软件；她的易用使得WEB开发人员只要一行代码即可完成调用。
当前最新版本：Version 3.8 (ASP版、PHP版、JSP版、ASP.NET版)
对于一般站点来说，eWebEditor已经很不错了，简单易上手。
使用方法/接口：
在线演示：
http://ewebeditor.webasp.net/demo.asp
MailMagic下载：eWebEditor Version 2.8.0 修正版及绍文档
mailmagic://zoDAsdNafHdAAJzazaazvAoxzdDsadxsqdvNaxfAzfNdfxDzxqzqJzoAqiHfoioqaHxHNAnafsoNzJosfxdsDfnxxvdqvNaqnsnindNfdzsiJiaHJsAJAqzAinAHqNaoqHixiiHvAAzdNHHvnqqfxAndiHonqiAzsNdosvavAqiqvaNNJNqsqznovDqNdAvvvondaaNxiDiffdDsainsaqDifnxvJJaJADzAfafdHnJddxzJJiNHvdqqfviDvodiiAziAHxNnHnzAHnzHanvDisaDHDJHqJn
2、HTMLArea
简介：
HTMLArea is a free, customizable online editor. It works inside your browser. It uses a non-standard feature implemented in Internet Explorer 5.5 or better for Windows and Mozilla 1.3 or better (any platform), therefore it will only work in one of these browsers.
使用方法/接口：
在线演示：
http://www.dynarch.com/demos/htmlarea/
MailMagic下载：HTMLArea release 3.0-rc1
mailmagic://qzsHqHnfAviDiNoqJvvisNHzsziqfzqxnzznosxnoDAvsvdxqfDqoJdiNiJnxAinsanxfznNnnAzoqvxdnqadJnnqsiJaxHsaassdaaaxAzDNxdDNHDzondfoNAJJodnaiqqzzziadsovfdfAJnoxzHAHsadosJsJffaNfHDnNoAxAvAsfnJADdqdvdsazifJNnHsxNxfavfJnzDfisnxzzfNAxfadnnvHDaxJfoqDHAzfNDsDxNNoizoviHNNaJ
3、FCKeditor
简介：
This HTML text editor brings to the web many of the powerful functionalities of desktop editors like MS Word. It's lightweight and doesn't require any kind of installation on the client computer.
Because it is Open Source, you may use it however you want.
使用方法/接口：
在线演示：
http://www.fckeditor.net/demo/default.html
MailMagic下载：FCKeditor 2.2 released
mailmagic://zxsANfJqNosoAAosnqifNHnDNAxNHaadnHfdHJqAqiDNsNqJAqqqHandxADAfJodoDDzzvoqaHsNvDdvJzAJqvsdxqzasdavfsqvzaHfzHzxqaiNvvHifAzDonxqofHxzxaqDszxqfafAJffJdqsDvvNHNqJsvisooxixAAsfodfJanqfANHNzxvqsxoJszAHnNdqzqvNafaavHJovAvvxHxzqsiisHDNfHDiovfffznJxiAdNfDHxnifizDxdqq
4、TinyMCE
简介：
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 CMS systems.
使用方法/接口：
在线演示：
MailMagic下载：TinyMCE 2.0.4
mailmagic://JiDqnAddiHsJnDHDiiaDDAJiNAvDioAAdqNddoizHindzsDxofniHaxDzxNszxqxvavivHiNzxzisovNqqxaDadzDoaxAJdzdNdxozdfvnxozHHdfJqssaiDzvaiHNiiHdHxqzsJAHsJfdDdxHDqvADvNaJsnJovoDDAfaaDqDoiaasAqnJoAxinvssziiAqJNsxsdfvoxNNdoAoxiiDaanJnfsNAnqDnfxfazssfJssqJJzixvHnDqiaiodJiJq
5、FreeTextBox
简介：
The no.1 free ASP.NET HTML Editor for IE and Mozilla.
使用方法/接口：
在线演示：
http://www.freetextbox.com/
MailMagic下载：FreeTextBox 3.0 Free License (free!)
mailmagic://oHNxNdiDzAxxofxiNHizdsaDADzfxoxfJsaNHdzAoaxNAdnaDvxNoxdxnxszqqANDoxJffJNAvixAoNnfiHasAzJJHAaJNJinJDNNioffviooqfHvffnnNHHxfvNfidnAoofdDfsaofAxafJoAJnNfanodovJofHAJzqanfJzqHdzvaJsosixaNaoxHNodfsHzzzdsDnovvJisNqvdqfzHNnzoaAoxiJdodoJdfiJisnvHfqdffHonsDioAvofan
6、widgEditor[支持XHTML]
简介：
widgEditor is an easily installed, easily customisable WYSIWYG editor for simple content. It replaces existing textareas with an improved editing pane using JavaScript, therefore if you don't have JavaScript (or your browser doesn't support HTML editing) it degrades gracefully. Try it out by typing below, and submit to see the processed output.
使用方法/接口：
在线演示：
http://www.themaninblue.com/experiment/widgEditor/
MailMagic下载：widgEditor
mailmagic://xxvvvsHAzAzJdAffaqNqAdxfNqvxqJsndsHNzDDJqadAAfqqzHaxnNsfdqDaxzfnNdnddzivsfnaNoixzqziDAvsiqqfqiqvAdzxfzDnvqNiNnadivAzdvqxzvoDfdJfNnxaqovnAfJfDnxiDvNDvqaAvqNizqzodfAfqHvNofzxzsivaxaqioaavHvDNqqDJJnzvqsoHxozoqniaJfavaisoHqaDJJffJdzHiHqfisisssdoDaoiAaJHiNDsddi
这篇文章对主流的在线WYSIWYG编辑器做了个详细的比较：
http://www.geniisoft.com/showcase.nsf/WebEditors