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.

Jason Grim

Traces the IP of comment authors in WordPress on the comments admin page. Shows the country, region, and city. 
Future features coming soon.

Comment Location Tracker

Traces the IP of comment authors in Wordpress on the comments admin page.

WP-GeoMap vs Comment Location Tracker