Stefano Garuti

This plugin allows you to directly embed Gmaps code in your posts or pages using the [gmap] shortcode.
HOW TO USE IT: 
When you are in the Write Post or Write Page screen, find the “Custom Fields” area. 
If isn’t already there, add a custom field named exactly “gmap” (without quotes) and copy and paste 
in the value field the whole code you obtained from Google Maps. 
Write anywhere in your post or page the “shortcode” [gmap]: when displayed on the blog it will be 
repalced with your Google Map. 
Save and publish. You are done!
UPDATE and NEWS at: http://www.wpmania.it/google-maps-mania-plugin/

GmapsMania

This plugin allows you to directly embed Gmaps code in your posts or pages using the [gmap] shortcode.

konfeldt

GMaps_on_Post_Page is a wordpress plugin that allows you to embed a google map in a page or post and let the width and height scale with a responsive design.
Available Params: 
* flex: boolean – specify if the map object should scale 
* width: int – width of the static map 
* height: int – height of the static map 
* src: string – source of the google map to embed
Insert the following shortcode into a post or page: 
* Flexible Example: <code>[GMaps_on_Post_Page src="https://maps.google.com/maps?q=London,+UK" ]</code> 
* Static Example: <code>[GMaps_on_Post_Page src="https://maps.google.com/maps?q=London,+UK" flex="false" width="640" height="480" ]</code>
Documentation is available via <a href="http://konfeldt.com/" rel="nofollow ugc">Konfeldt.com</a>

GMaps_on_Post_Page

GMaps_on_Post_Page is a wordpress plugin that allows you to embed a google map in a page or post and let the width and height scale with a responsive  …

GmapsMania vs GMaps_on_Post_Page