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.

Automattic

Andrew Ozz

Nikolay Bachiyski

Ice allows you to visually distinguish who changed what in the post content and then approve or cancel those changes.
Ice Visual Revisions is based on the <a href="https://github.com/NYTimes/ice" rel="nofollow ugc">Ice library</a> developed by The New York Times CMS Group.

Ice Visual Revisions

Adds revision tracking to the visual editor. Modified, added, or deleted text is shown in color, along with the user and time of change.

Sane Visual Editor vs Ice Visual Revisions