As easy as it is for some people, for others editing text in wiki syntax is an entrance barrier for using wikis. Therefor it should be also possible to edit texts like you see them afterwards in a "what you see is what you get" manner. Editors include:
 * [http://fckeditor.net/ fckeditor], used in [http://moinmoin.wikiwikiweb.de moinmoin].
 * [http://wikiwyg.net/ wikiwyg], used in [http://kwiki.org/ kwiki].
 * [http://tinymce.moxiecode.com/ tinymce], as used in a [http://trac-hacks.org/wiki/TinyMceWikiPlugin trac plugin], but it does not write trac wiki syntax.