regen

This plugin inserts quicktags of the admin page to the upper part of textarea of the comment form.
<h4>Features</h4>
<ul>
<li>You can edit tags in the admin page.</li>
<li>You can limit quicktags by user roles.</li>
</ul>

Comment Form Quicktags

This plugin inserts a quicktag toolbar on the comment form.

bmsterling

This plugin adds more buttons to the non-visual editor view for creating/editing posts/pages
Currently adds: 
* h1 
* h2 
* h3 
* h4 
* h5 
* q 
* cite 
* sub 
* sup 
* dl 
* dt 
* dd
<h3>Credits</h3>
Copyright 2012 Benjamin Sterling (benjamin.sterling@kenzomedia.com)
This program is free software; you can redistribute it and/or modify 
it under the terms of the GNU General Public License, version 2, as 
published by the Free Software Foundation.
This program is distributed in the hope that it will be useful, 
but WITHOUT ANY WARRANTY; without even the implied warranty of 
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 
GNU General Public License for more details.
You should have received a copy of the GNU General Public License 
along with this program; if not, write to the Free Software 
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

Quicktag Extender

This plugin adds more buttons to the non-visual editor view for creating/editing posts/pages

Comment Form Quicktags vs Quicktag Extender