3. LinkparserA high-level interface to the CMU Link Grammar. (Github mirror)
4. Ruby PfAn experimental Ruby interface to `pf`, the OpenBSD Packet Filter (github mirror).
6. LinguisticsA generic, language-neutral framework for extending Ruby objects with linguistic methods.
7. treequelAn LDAP toolkit for Ruby, intended to allow quick, easy access to LDAP directories in a manner consistent with LDAP's hierarchical, free-form nature.
8. darkfishA project to make a complete replacement for the default HTML generator for Rdoc, the API documentation-extraction system for Ruby. (github mirror)