afinger is a configurable finger client, written in Perl. It can be used both together with a finger daemon and from the command line. afinger honours a .nofinger file in home directories, you can set a minimum and maximum UID, use a Fortune program for erroneous requests, and virtually control each part of the returned information.
PFinger is a highly configurable, secure and portable finger deamon. It is started by inetd but does not run as root. The service may be disabled for individual users by the administrator or by the users themselves. It offers configurable special files (e.g. a users PGP-Key could be retrieved with 'finger john.pgpkey@host), no printing of users home directory or shell and it also provides a graphical frontend that allows users to easily alter the output that will be sent, when they are fingerd.
The motive behind murder was to surface and extend the information that was once universally provided by finger(1) through a modern interface. Building on this, murder has a plug-in infrastructure to add additional features, allowing it to become a full-fledged social-information platform that utilizes standard and open technologies.