Common Lisp Quick Reference is a booklet with short descriptions of the thousand or so symbols defined in the ANSI standard. It comes with a comprehensive index. It is written in LaTeX and formatted for printing on both A4 and letter paper. After folding the sheets lengthwise, they can easily be turned into a handy booklet.
TextSearch is a program to search through a set of text files in a directory structure. Each document is searched using a regular expression and an overview of the results is shown as a tree structure. By clicking on a file, it can be viewed, with matches being highlighted. As opposed to other programs out there, its focus is not so much on statistics, i.e. how often a word would occur in an entire corpus of files, but rather on occurrences in single files.
The CDAY Calendar Almanac displays historical anniversaries such as birthdays and general events. It displays the equivalent date in multiple calendar systems, including Hebrew, Julian, JDNs, Great Underground Empire (Zork), Shire (Lord of the Rings), and Star dates. Separate GUI, command line, and Web-based versions are available, along with free libraries of thousands of events.