SIGAR (System Information Gatherer and Reporter) is a cross-platform, cross-language library and command-line tool for accessing operating system and hardware level information in Java, Perl and .NET.
My feeble attemp to combine Ruby Jewel (another feeble attempt), with Rails, SQL kernel module, web service module, Ajax, ..., etc. (list not full)
Etch is a cross-platform, language- and transport-independent framework for building and consuming network services. With Etch, service development and consumption becomes no more difficult than library development and consumption.
upvn - Implementation of the User Programmable Virtualized Network concept.