If Elektra were a girl, she'd be the one I'd marry. (based on first impressions till date)
Overview of the Elektra Initiative
Elektra is a universal hierarchical configuration store, with related goals like GConf and the Windows Registry. It allows programs to read and save their configurations with a consistent API, and allows them to be aware of other applications' configurations, leveraging easy application integration. The whole point of it is to tie applications together, so that they can co-operate and share their user-preferences.
The developers are associated to unix philosophy and the very practical point consists of writing a configuration library. Every software needs this functionality, it is not easy to do it right and performant and we want to avoid any unnecessary code duplication.