shash is a program which produces message digests for files, and checks whether the digest remains the same (i.e., whether the files changed). Since anyone can generate the message digest, it may not be suitable for some security-related applications. Because of this, shash also supports HMAC (rfc2104), which is a mechanism for message authentication using cryptographic hash functions. shash can use a key with a hash algorithm to produce hashes that can only be verified with the same key. This way, you can securely check whether files in a filesystem were altered.
The number perl script will print the English name of a number. One can print names of extremely large numbers (e.g. 1e1234567). Number can be run on the command line, or as a CGI script when run as 'number.cgi'. Number prints names in both the American and European naming system. It can also print the decimal expansion of a number in either naming system.
Calc is arbitrary precision arithmetic system that uses a C-like language. It's useful as a calculator, an algorithm prototype, and as a mathematical research tool. More importantly, calc provides a machine-independent means of computation. Calc comes with a rich set of builtin mathematical and programmatic functions.
DreamBot is an experimental IRC bot totally written in Perl. Its main features include a totally dynamic user and channel list (no need to deal with text files), a learning ability that's similiar to infobot, built-in seen and topten talkers support, notes/memos, pasting of Freshmeat and Slashdot news, and Babelfish (Altavista) translation. DreamBot doesn't require any extra Perl modules.
Momoko is a generic, object-oriented, modular, extensible environment for creating multi-user environments. It is suitable for writing MUDs, servers, and community-based Web sites. It is written in pure Java and supports Java and Python as internal scripting languages. Momoko provides facilities for organizing objects into tree-based hierarchies, orthogonal persistence, a transparent distributed objects system, remote access to source code and user files via WebDAV, a telnet-enabled shell for manipulating the object database, and an integrated build process which can be triggered remotely.
xfigchart.pl is a quick and easy way to create bar charts. It uses a commandline interface and takes data values as a table from stdin and writes an XFig file to stdout. Postprocessing of the bar charts is done manually using the free vector drawing tool XFig, with which it is possible to create very complex diagrams mixed with other graphics components in a short time and to use a variety of export filters (PostScript, LaTeX, PNG, etc.).
eud2mbox is a conversion utility to convert Eudora mailboxes (already mostly mbox format) to real mbox-formatted mailboxes, removing all the html/x-flowed and other garbage. It also reads the TOC file and properly inserts both Status: and X-Status: headers so that mailers like mutt/pine/elm can properly tell what messages are read, new, replied, etc.
MultiSeti is a utility for the Seti@Home client which helps you manage multiple SETI packets. If you have dial-up access to the Net, want to download more than one packet, and don't want to run clients simultaneously, MultiSeti will run one after another (when one is finished analyzing, it starts seti to analyze the next packet).