Simon

When you blog about a specific location, you may want link to it. On android devices, you can use links in the style <code>geo:37.786971,-122.399677</code> for opening the location in a native map app such as Google Maps. However, most browsers will not understand this yet. On the other hand, if you link to the Open Street Map project directly, some users may not prefer this.
With this plugin, you can link to geo locations and support the user with a handler for it. Activating a geo-link will show a popup menu with various options for the user.
The urls have to follow the specification from <a href="http://en.wikipedia.org/wiki/Geo_URI" rel="nofollow ugc">http://en.wikipedia.org/wiki/Geo_URI</a>.
Your Feedback goes here: <a href="http://tricider.com/brainstorming/13HJn" rel="nofollow ugc">http://tricider.com/brainstorming/13HJn</a>
Note: This is the first beta release. I hope to develop this plugin much further. Please report every wish or issue you may have.

geoURI

When you blog about a specific location, you may want link to it. On android devices, you can use links in the style geo:37.786971,-122.

Shashikanta

This Plugin insert a location map in your posts/pages using the iFrame based Google Maps without any Api. 
The user can set the exact coords (latutude or longitudes) or insert the location address. If you want to insert a map in a posts you must to generate two personalized fields (called ‘latitude’ and ‘longitude’) with the coordinates or a personalized field called ‘location’ with the address.
This is good for Real Estate type of Blog as shown in the pics and Custom filed type location. It is very lightweight tested in wordpress 3.3.2 version, custom template ready, Google API free.

Quick Location Maps

This Plugin insert a google map in to your posts using the Google Maps Api Free.

geoURI vs Quick Location Maps