Methods and systems are provided for adapting software applications for download and execution on a variety of different mobile devices which employ different Application Execution Environments. An Application Download Protocol for transferring applications to mobile devices is also provided. Mobile devices can be matched with compatible applications according to functionality required by the applications and functionality provided by the mobile devices. Applications submitted by developers can be automatically matched to application categories, thus facilitating user selection of applications. Data used by applications running on mobile devices can be remotely managed by application developers, allowing developers to remotely control the type and presentation of data on mobile devices without the need for data management servlets to be provided by the developers.