Cloud Fox is a free open source Windows Phone 7 application that allows you to wireless synchronize your Firefox Weave bookmarks, history items and open tabs to your mobile phone. This makes all the bookmarks, history items and open tabs of the user his Firefox instantly available on its mobile phone. It is similar to Firefox Home for the iPhone platform.
The application is developed in C# and is currently targeting phones running NoDo; future versions will require Mango. The development of the app can be followed at Codeplex here.
The app is free and can be downloaded from Marketplace here.