Firdaus Zahari

This plugin allows you to track all user devices used when logging in to your site. The user agent, login date/time, and logout date/time (if the users log out from the site) are tracked automatically and persisted into the database for later viewing.
You can find a list of all login devices available under the Users > Login Devices submenu.

FS Login Devices

Track and display all users devices used during authentication process

hzlzh

A plugin to Show UserAgent information in comments list.
In this plugin, more browsers and OSs will be distinguish like IE10/Chrome OS/New iPad/Kindle Fire ect. 
Also the IP database will always be the newest one.
Release Page: <a href="https://wordpress.org/extend/plugins/show-useragent/" title="Show UserAgent" rel="ugc">WordPress Plugin Page</a> and <a href="https://zlz.im/show-useragent/" title="hzlzh 's Blog" rel="nofollow ugc">hzlzh ‘s Blog</a>

Show UserAgent

Show visitors' IP to Country Flag, Web Browser, Operating System icons on WordPreess comment list.

FS Login Devices vs Show UserAgent