A multi-platform group communication framework for smartphones
Chameleon is a group communication framework. As such, it simplifies building server-less, multi-peer connected applications for smartphones and some PC platforms. It is available in J2ME, J2SE, Android, .NET and .NET Compact Framework platforms.
Dessy is a DEsktop Search and SYnchronization framework for mobile devices. It allows file search using content, metadata, and custom tags, and synchronization of results, and entire file system subtrees. It works on MIDP 2.0 handsets and Java 2 SE.
OpenDMTP is a protocol/framework that allows communications with small devices (mobile phones, PDA's, and other high-latency/low-bandwidth devices), especially geared towards the transmission of GPS, temperature, and other remote monitoring information.