Contenido is a CMS (content management system) for the Web environment. It features advanced user management, in-site editing, a WYSIWYG editor, and more.
OWX (OmniaWeb-X) is Web-based site mangement software and a development framework that uses exclusively open source software to run.
NSS and PAM modules for name lookups using LDAP.
A fast C++ matrix library with optional interfaces to LAPACK and ATLAS.