The major GPS navigation software companies are not liking Google very much. Google has released a new fully-featured navigation application called Google Maps Navigation which uses the data Google Maps has gather over the last few years, and combined it with a turn-by-turn navigation system, and then go and release all of this for free.

Garmin and Tomtom reacted badly on the stock market after that announcement, losing 16% and 20% of their value respectively in one day.

At the moment it is only available for Android 2.0 phones, but there are promises that it will be coming out on other platforms soon. When the windows Mobile version ships, I will certainly be getting my download…