Titan allows service-oriented processing of context recognition applications on Wireless Sensor Networks. It includes an execution environment developed for TinyOS and a Java ME (Personal Profile) Network Manager intended to be run on a mobile phone.
Tiny Distributed Computing Library is an easy to use cross-platform library for performing distributed computations. It is written in C++ and designed with good performance and modularity in mind.
RUNES is a cross-platform, component-based middleware framework allowing for dynamic reconfiguration of functionality. Its lightweight implementation spans powerful nodes like PDAs and PCs, as well as tiny embedded devices.