PyICU is a Python extension wrapping IBM's International Components for Unicode C++ library (ICU).
PyLucene is a Python extension for accessing Java Lucene from Python. Its goal is to allow use of Lucene's text indexing and searching capabilities from Python. It is designed to be API compatible with the latest version of Java Lucene.
A thread-safe time-limited object cache for Ruby.
A minimalist VFS library for D oriented at game developers.