The klish is a framework for implementing Cisco-like command-line interfaces on Unix systems. It is configurable through XML files. "Klish" stands for "Kommand Line Interface SHell". The klish is a fork of clish-0.7.3. The original clish was developed by Graeme McKerrell. The klish adds some new features, but is compatible (as much as possible) with clish's XML configuration files.
Mail2sh makes it possible to carry out shell commands by email. Email is sent to a particular user on your host and the commands will be carried out if the user and password given matches ones in /etc/passwd. Commands are executed with the user's privileges, and combined with a PGP module ensures a certain level of security for use. Note that the system is not natively encrypted, so use of an encryption mechanism is highly recommended for security reasons.
ldp (LDAP Distributed Profile) will read a user-specific shell profile (.profile) from an LDAP directory server upon login, allowing users (including multiple people operating as root) to always have the same settings irrespective of which machine they are working on. ldp also operates correctly when logging in via SSH via public key auth.
Shell Flags (shFlags) is a library written to greatly simplify the handling of command-line flags in Bourne based Unix shell scripts (such as those run with bash, dash, ksh, sh, and zsh). Most shell scripts use getopt for flag processing, but the different versions of getopt on various OSes make writing portable shell scripts difficult. shflags instead provides an API that doesn't change across shell and OS versions, so the script writer can be confident that the script will work.
VanDyke ClientPack is a set of commandline utilities for securely automating file transfer, shell, and public-key administration tasks on Windows, Linux, and Unix platforms. It includes vsftp, an interactive SFTP commandline utility providing quick, easy, and secure file transfer operations, vsh, a commandline shell utility, vcp, a commandline file transfer utility, vkeygen, a public/private key generator utility, and vpka, a commandline tool for uploading keys to a Secure Shell server.