Key Manager is designed to allow distribution and management of SSH keys in a way that scales beyond manually copying public keys to remote hosts. This approaches Single-Sign-On functionality, if limited to ssh access from a single host.
PyADtools will allow Python to easily search, create and manipulate Active Directory objects in a Windows environment. Currently, it is merely a front-end to ADSI. The project will ultimately provide flexible, cross-platform Active Directory tools.
XSDB XML is to DATA as HTML is to DOCUMENT. Publish and combine data as easily as HTML format and web browsers publish and view documents. Implementations in Python, javascript, java, C#/.NET.