Arb-Scan is a remote banner scanner written in bash and Perl. It supports 12 different services banner checks (daytime, ftpd, sshd, smtpd, domain, finger, httpd, pop2, pop3, nntp, imapd and snpp). It features IP file reading, logging, random IP scanning, ftp anonymous login checking and VRFY/EXPN smtp checking.
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.
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.
Fingerbob is a simple Finger daemon which displays formatted user information from an LDAP directory. It is useful when you're in a dark corner of the server room without a GUI and need to find a phone number. Almost every networked computer has a finger client, so Fingerbob provides a simple but universal network address book. It can also provide text documents and list all people in a specified branch of the LDAP directory.