Max Chirkov

Simple log of user logins. Tracks user name, time of login, IP address and browser user agent.
<a href="http://screenr.com/kfEs" title="Demo Video" rel="nofollow ugc">Demo Video</a>
Features include:
<ol>
<li>ability to filter by user name, successful/failed logins, month and year;</li>
<li>export into CSV file;</li>
<li>log auto-truncation;</li>
<li>option to record failed login attempts.</li>
</ol>
Translations:
<ul>
<li>Persian [fa_IR] by <a href="http://taktaweb.ir/" rel="nofollow ugc">MohammadHadi Nasiri</a></li>
<li>German [de_DE] by Philipp Moore</li>
<li>Russian [ru_RU]</li>
<li>Ukrainian [ua_UA]</li>
<li>Chinese [zh_CN] by <a href="http://www.mihuwa.com/" rel="nofollow ugc">Mihuwa</a></li>
<li>
French [fr_FR] by <a href="http://www.lo-geek.fr/" rel="nofollow ugc">Mehdi Hamida</a>
</li>
<li>
Author: Max Chirkov
</li>
<li>Author URI: <a href="http://simplerealtytheme.com/" title="Real Estate Themes & Plugins for WordPress" rel="nofollow ugc">http://simplerealtytheme.com/</a></li>
<li>Copyright: Released under GNU GENERAL PUBLIC LICENSE</li>
</ul>
<h4>Filters</h4>
** Log Output Within the Table **
sll-output-data – filters table row array where array keys are column names and values is the output 
For example, we can use this filter to link IP addresses to a geo-location service:
<pre><code><?php
add_filter( 'sll-output-data', 'link_location_by_ip' );
function link_location_by_ip($item){

 //$item is a single row for columns with their values

 $item['ip'] = sprintf('<a target="_blank" href="http://infosniper.net/index.php?ip_address=%1$s&map_source=3&two_maps=1&overview_map=1&lang=1&map_type=1&zoom_level=11">%1$s</a>', $item['ip']);
 return $item;
}
?>
</code></pre>
<h4>Translation</h4>
If you would like to contribute, the POT file is available in the languages folder. Translation file name convention is sll-{locale}.mo, where {locale} is the locale of your language. Fore example, Russian file name would be sll-ru_RU.po.

Simple Login Log

Хороший плагин и полезный

Simple login log

This plugin keeps a log of WordPress user logins. Offers user and date filtering, and export features.

Ronald Huereca

Metronet Log provides a WordPress API for date-based data storage based on a user ID. It’s up to the developer to implement the actual logging and data retrieval, but the plugin provides many helper methods.
You can view the full documentation for the <a href="https://github.com/ronalfy/metronet-log" rel="nofollow ugc">WordPress plugin on Github</a>.
Contributions to this plugin are welcome, so please feel free to weigh in via the support forums here and contribute code on <a href="https://github.com/ronalfy/metronet-log" rel="nofollow ugc">Github</a>.

Metronet Log

Provides a WordPress API for date-based data storage based on a user ID.

Simple Login Log vs Metronet Log