The libffi library provides a portable, high level programming
interface to various calling conventions. This allows a programmer
to call any function specified by a call interface description at
run-time.

FFI stands for Foreign Function Interface. A foreign function
interface is the popular name for the interface that allows code
written in one language to call code written in another language.
The libffi library really only provides the lowest, machine
dependent layer of a fully featured foreign function interface. A
layer must exist above libffi that handles type conversions for
values passed between the two languages.

pmacct is a small set of passive network monitoring tools to measure, account, classify and aggregate IPv4 and IPv6 traffic; a pluggable and flexible architecture allows to store the collected traffic data into memory tables or SQL (MySQL, SQLite, PostgreSQL) databases. pmacct supports fully customizable historical data breakdown, flow sampling, filtering and tagging, recovery actions, and triggers. Libpcap, sFlow v2/v4/v5 and NetFlow v1/v5/v7/v8/v9 are supported, both unicast and multicast. Also, a client program makes it easy to export data to tools like RRDtool, GNUPlot, Net-SNMP, MRTG, and Cacti.

RANCID monitors a router's (or more generally a device's) configuration,
including software and hardware (cards, serial numbers, etc) and uses CVS
(Concurrent Version System) or Subversion to maintain history of changes.

RANCID does this by the very simple process summarized here:

* login to each device in the router table (router.db),
* run various commands to get the information that will be saved,
* cook the output; re-format, remove oscillating or incrementing data,
* email any differences (sample) from the previous collection to a mail
list,
* and finally commit those changes to the reivision control system

RANCID also includes looking glass software. It is based on Ed Kern's looking
glass which was once used for http://nitrous.digex.net/, for the old-school
folks who remember it. Our version has added functions, supports cisco,
juniper, and foundry and uses the login scripts that come with rancid; so it
can use telnet or ssh to connect to your devices(s).

Rancid currently supports Cisco routers, Juniper routers, Catalyst switches,
Foundry switches, Redback NASs, ADC EZT3 muxes, MRTd (and thus likely IRRd),
Alteon switches, and HP Procurve switches and a host of others.

Rancid is known to be used at: AOL, Global Crossing, MFN, NTT America,
Certainty Solutions Inc.

The sFlow toolkit provides command line utilities and scripts for analyzing sFlow data.

sflowtool interfaces to utilities such as tcpdump, Wireshark and Snort for detailed packet tracing and analysis, NetFlow compatible collectors for IP flow accounting, and provides text based output that can be used in scripts to provide customized analysis and reporting and for integrating with other tools such as Graphite or rrdtool.

This project is the development project vor various PHP libraries and applications.

JWChat aims to be a full featured, web based jabber client. It uses
only JavaScript and HTML on the client-side. Currently it supports
basic jabber instant messaging, roster management and muc-based
group chats.

The Python Imaging Library adds fairly powerful image processing
capabilities to the Python interpreter and provides extensive file
format support, and efficient internal representation.