vahidd

Wp log is simple plugin to save actions in database. Also actions can be sent to mail. 
Wp log can record: 
User Login 
User Logout 
User Register 
User Delete 
Post Edit 
Post Delete 
Theme Switch 
New Comment 
Comment Approved 
Comment Unapproved 
Plugin Activated 
Plugin Deactivated
There is a useful option panel for plugin that let you to define which actions can be saved in database or send it in email.
Function: 
wl_logs_action_row() 
Return saved data in database. Return data is an array.
<?php echo wl_logs_action_row(‘action_name’,’ip_address’,’127.0.0.1′,’10’,’date’,’ASC’); ?>
Parameter 1 is output data that can be: 
* – everything 
action_name – action name 
ip_address – return ip address 
date – date of the action 
data – extra data (need to be unserialized)
Parameter 2 is filter key.
Prameter 2 is filter value
parameter 3 is displayed items count
Parameter 4 is items order by that can be date, ip_address, id
Parameter 5 is order that can be ASC or DESC
Samples:
Display latest actions from specific ip: 
<?php echo wl_logs_action_row(‘action_name’,’ip_address’,’YOUR IP ADDRESS’,’10’,’date’,’ASC’); ?>
Display every thing of latest actions: 
<?php echo wl_logs_action_row(‘*’); ?>
Display only name of latest actions: 
<?php echo wl_logs_action_row(‘action_name’); ?>
Display latest actions ip address: 
<?php echo wl_logs_action_row(‘ip_address’); ?>
<h3>Arbitrary section 1</h3>

WP Log

Log some actions in database or send it via email.

WP-Logger

This plugin makes it easy to keep a log of activity on your WordPress site. 
You can also decide how detailed you want the log to be, whether this is including any minor event or focus on the more substantial updates. 
You can get started with the free version. 
You can also skip straight to using the premium edition if you need features like email notifications, WordPress reports, and activity log integration tools.
For every event that the plugin records it also reports the:
<ul>
<li>Date & time (and milliseconds) of when it happened,</li>
<li>User & role of the user who did the change,</li>
<li>Source IP address from where the change happened,</li>
<li>The object on which the change has taken place.</li>
</ul>

WP Logger

WPLogger is a real-time user activity and monitoring log plugin. It helps WordPress webmasters keep an eye on what is happening on their websites.

WP Log vs WP Logger