Zoho Wiki allows you to pre-set an editor of your choice too !
You can choose from
Advanced Editor : Features a text editor with a host of tools.
Simple Editor : Basic text editor with only essential options
Text Editor : Allows you to see the HTML code version your page
Zoho
Wiki also provides a Constrained Editor, which allows you to edit each
paragraph individually. To use this feature, move your mouse over a
page. You will find that paragraphs appear selected. Just double click
on the paragraph that you wish to edit and a basic editor opens up with
the text of the respective paragraph within.