Quality is delighting customers
Most of the OS have there own tool to test Mobile apps. even you want to test you apps for third party tool thn i would sugg. you to go with QTP.
you can take a look at http://mobileappstesting.contussupport.com which is a service for remote device access with great automation and manual for testing mobile applications. They support all mobile platforms with a different of handsets per platform. This site provide free debugging of first 5 basic bugs in your apps.
its mean its not a open source tool...
Here are top 10 Mobile Testing Tools