EBDB is a contact management/addressbook package for Emacs.
It lives in both the ELPA repositories, and on Github at
https://github.com/girzel/ebdb. It’s best to install from ELPA, but
bug reports and pull requests on Github will also be attended to.
report-emacs-bugs, include “EBDB” somewhere in the
subject line, and cc the maintainer.
More EBDB-related packages are available in ELPA.
See the manual for usage details.