Today I've uploaded a project site and some documentation for the project, which is now available here.
Babbler is still in a quite early stage, but it's slowly shaping up. There have been numerous XEP's implemented during the last weeks and I am planning to implement more. Once it's mature enough and I have a better overview over the XEPs and their interdependencies, I am planning to release a first version. Until then, there's only the source and some snapshot builds for you.
If you have any feedback of any kind, e.g. on the project itself or especially the API, let me know!