DIRT is a simple directory stack utility that lets the user use the same directory stack across terminals and sessions. The stack of directories is stored in a file (.dirtpile) in your home directory. All shell sessions access the same file, and thus, all of them use the same stack. DIRT supports jumping to specific entries, push, pop, swap the CWD with the top of the stack, and jump to the top of the stack. A set of CSH shell aliases are also included, and required for proper functioning.
MrTools is a suite of tools for managing large, distributed environments. It can be used to execute scripts on multiple remote hosts without prior installation, copy of a file or directory to multiple hosts as efficiently as possible in a relatively secure way, and collect a copy of a file or directory from multiple hosts.
NOTE is a small console program that allows you to manage notes similar to programs like "knotes" from the command line. It supports different database backends for storage, and includes a DBI-based MySQL module and another module that uses a binary file for storage and a DBM module.
PShell is a secured shell written entirely in Perl. It has a curses menu interface and a rudimentary commandline interface. The shell has been secured by being placed into a chroot jail and allowed only certain commands or programs to be used (flexibility is added by a configuration file).
Sethi Search Utility is a simple command line utility to submit a search to Google, Yahoo!, or MSN and show the (text) results on standard output. Support for several search engines is included. It's currently in serious need of a re-write, especially to avoid scraping and become a good engine using the search APIs provided.