Passwd is the Horde password changing application.

Right now, Passwd provides fairly complete support for changing passwords via
Poppassd, LDAP, Unix expect scripts, the Unix smbpasswd command for SMB/CIFS
passwords, Kolab, ADSI, Pine, Serv-U FTP, VMailMgr, vpopmail, and SQL passwords.

WWW: http://www.horde.org/passwd/