Matt Wiebe

Locks down the TinyMCE visual editor with a sane set of buttons that will help your authors to not insert disruptive styles.
3rd-party buttons are maintained, so your other plugins should keep working if they add buttons.

Sane Visual Editor

Locks down the TinyMCE visual editor with a sane set of buttons that will help your authors to not insert disruptive styles.

tradesouthwest

This plugin disables the visual editor drastically at any user login state. But if a user checks the box to enable visual editor, in the Profile page, the setting will be saved so they may edit with Visual Editor yet, will always return to disabled when they log back in. This is done for version 0.2.0 and higher as an experiment to see how well users can accept the fact that visual Editor is a dangerous thing in the hands of non-experienced HTML writers.

Modify Visual Editor

This plugin disables the visual editor for all users. You may allow the use of the Visual Editor for Admins if you would like.

Sane Visual Editor vs Modify Visual Editor