Closebracket lets you define multiple shell actions in a single command to speed up the typing of the most repetitive shell commands. It includes ']' and '][' commands, which are located near the "Enter" key and are easy to type quickly. They invoke primary and secondary actions respectively.
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.
vp-usb-lock is a Linux kernel driver and PAM module that utilizes the PC wireless USB lock and makes it possible to use it as authentication method for your Linux box. It is easy to install, but needs access to the sources of the kernel and PAM to build correctly. It has been tested under Fedora Core 2 with a custom made 2.6.7-1.494.2.2 kernel, but it should also work with other kernel versions and distributions.
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.
eltclsh (editline Tcl shell) is an interactive shell for the Tcl programming language. It provides command line editing, history browsing, and variables and command completion thanks to editline features. The completion engine is programmable in a way similar to tcsh, and comes with built in completion for the entire Tcl language by default. The package also provides elwish, an interactive interpreter for the Tk toolkit. You need the editline library in order to compile eltclsh.