xpylib is a library for Python developers. It is not specialized, and may be used for a wide range of tasks. It contains a few tools such as pyenv (virtual environment), timetest (speed testing for small code pieces), and so on.
A probabilistic Java toolkit for building search engines.
Standards-compliant Java persistence via JDO/JPA/REST and RDBMS/MongoDB/Neo4j/Excel/LDAP.