* CL: (cl). Partial Common Lisp support for Emacs Lisp.
* Dired-X: (dired-x). Dired Extra Features.
* Ediff: (ediff). A visual interface for comparing and merging programs.
+* Emacs-Xtra: (emacs-xtra). Specialized Emacs features.
* PCL-CVS: (pcl-cvs). Emacs front-end to CVS.
* Speedbar: (speedbar). File/Tag summarizing utility.
* Message: (message). Mail and news composition mode that goes with Gnus.
* MH-E: (mh-e). Emacs interface to the MH mail system.
* MIME: (emacs-mime). Emacs MIME de/composition library.
+* PGG: (pgg). Emacs interface to various PGP implementations.
* SC: (sc). Supercite lets you cite parts of messages you're
replying to, in flexible ways.
* SMTP: (smtpmail). Emacs library for sending mail via SMTP.
+* Sieve: (sieve). Managing Sieve scripts in Emacs.
* Autotype: (autotype). Convenient features for text that you enter frequently
in Emacs.