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Net::IPAddr is a collection of helpful functions used to convert IP addresses to/from 32-bit integers, applying subnet masks to IP addresses, validating IP address strings, and splitting a FQDN into its host and domain parts. No rocket science here, but I have found these functions to very, very handy. For example, have you ever tried to sort a list of IP addresses only to find out that they don't sort the way you expected? Here is the solution! If you convert the IP addresses to 32-bit integer addresses, they will sort in correct order.

rsync is a replacement for rcp that has many more features. rsync uses the "rsync algorithm" which provides a very fast method for bringing remote files into sync. It does this by sending just the differences in the files across the link, without requiring that both sets of files are present at one of the ends of the link beforehand. This makes rsync a good remote file distribution/synchronization utility in a dialup PPP/SLIP environment. Note, requires rsync on the destination machine. There is a Computer Science Technical Report on the rsync algorithm is included in the distribution, and is available as ftp://samba.anu.edu.au/pub/rsync/tech_report.ps

WordNet is a powerful lexical reference system that combines aspects of dictionaries and thesauri with current psycholinguistic theories of human lexical memory. It is produced by the Cognitive Science Laboratory at Princeton University, under the direction of Professor George Miller. In WordNet, words are defined and grouped into various related sets of synonyms. Not only is the system valuable to the casual user as a powerful thesaurus and dictionary, but also to the researcher as one of the few freely available, lexical databases. WordNet is available via an on-line interface and also as easy-to-compile C source code for Unix.

Logisim is an educational tool for designing and simulating digital logic circuits. With its simple toolbar interface and simulation of circuits as you build them, it is simple enough to facilitate learning the most basic concepts related to logic circuits. With the capacity to build larger circuits from smaller subcircuits, and to draw bundles of wires with a single mouse drag, Logisim can be used (and is used) to design and simulate entire CPUs for educational purposes. Logisim is used by students at colleges and universities around the world in many types of classes, ranging from a brief unit on logic in general-education computer science surveys, to computer organization courses, to full-semester courses on computer architecture.

From the README: MPEG-1 Video Software Encoder (Version 1.5; February 1, 1995) Lawrence A. Rowe, Kevin Gong, Eugene Hung, Ketan Patel, Steve Smoot and Dan Wallach Computer Science Division-EECS, Univ. of Calif. at Berkeley This directory contains the freely distributed Berkeley MPEG-1 Video Encoder. The encoder implements the standard described in the ISO/IEC International Standard 11172-2. The code has been compiled and tested on the following platforms: DECstation 5000 and Alpha HP PA-RISC (HP/UX 9.X) (i.e., HP 9000/7XX and 9000/3XX) SGI Indigo running IRIX 5.0.1 Sun Sparc (SunOS 4.X) This is *not* bug-free software. In particular, I've had problems using odd-sized input frames. Other than that, it works OK. eric. erich@FreeBSD.org

The Suricata Engine is an Open Source Next Generation Intrusion Detection and Prevention Engine developed by the Open Information Security Foundation (OISF). This engine is not intended to just replace or emulate the existing tools in the industry, but will bring new ideas and technologies to the field. OISF is part of and funded by the Department of Homeland Security's Directorate for Science and Technology HOST program (Homeland Open Security Technology), by the Navy's Space and Naval Warfare Systems Command (SPAWAR), as well as through the very generous support of the members of the OISF Consortium. More information about the Consortium is available, as well as a list of our current Consortium Members.