Darshan Sawardekar

This plugin adds an <code>[whatsmyip]</code> shortcode tag to WordPress. You can use it 
to embed the current User’s IP address inline in a Post.
The shortcode takes 3 attributes, <code>ip</code>, <code>country</code> and <code>coords</code>. Each of 
these can take boolean values like 1, yes, no, true. Truthy values 
enable the display of the corresponding field.
For Eg:- To display <code>ip</code> and <code>country</code> details use,
<pre><code> [whatsmyip ip='yes' country='yes']
</code></pre>
The <code>ip</code> attributes defaults to true if absent. Rest of the attributes 
are false by default.
A Widget is also provided for use inside sidebars. Use the checkboxes in 
the Widget customization screen to change the displayed fields.

whats-my-ip

I've been using this plugin for a couple of years and I just realized it is no longer working.  It shows no results no matter what attributes I try in the shortcode. I've tried it in PaleMoon, FireFox and Chrome.



No longer working

Display the current User's IP address in Widgets & Shortcodes.

Backie

A plugin that leverages maxmind’s geolocation ability to display a google map of the the location of the author of a post when creating a post. Uses 3 methods to get the geo location of a author, one is to use the php extenstion, the second is to use maxmind’s city web service and the third is to use a web service on api.codeninja.me.uk which uses maxmind’s GeoCityLite database.

WP-GeoMap

A geolocation plugin to show where posters were when making a new post.

whats-my-ip vs WP-GeoMap