Shlomi Turjeman

This plugin reports to the admin on posts amount of author in specified period of time.
<h3>License</h3>
Copyright 2013 Shlomi Turjeman
This program is free software; you can redistribute it and/or modify 
it under the terms of the GNU General Public License as published by 
the Free Software Foundation; either version 2 of the License, or 
(at your option) any later version.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USANone.

Author Periodic Report

This plugin reports to the admin on posts amount of author in specified period of time.

RaminMT

This plugin simply adds a button to Your site and let users report Your site broken links/problem and You can see them in WP dashboard. 
Description Box let You get site visitors name, email or anything You need plus description of what is the problem but if You don’t need this feature simply You can disable It from setting page 
With shortcode provided You can use plugin fully customized 🙂
<h3>Features</h3>
<ul>
<li>Fast & Light</li>
<li>Fully Customizable</li>
<li>Ajax Based</li>
<li>Secure</li>
<li>Dashboard Widget</li>
<li>Simple to use with shortcode, jQuery selector and default button</li>
<li>Description Box to get email/name of clients and their descriptions about problem</li>
</ul>

Links/Problem Reporter

It's a Sexy and Nice plugin to get reported your site's Problem/Broken Links

Author Periodic Report vs Links/Problem Reporter