Angst is an active sniffer, based on libpcap and libnet. It dumps into a file the payload of all the TCP packets received on the specified ports. It implements two methods for active sniffing. Angst is able to monitor ARP requests, and after enabling IP forwarding on the local host, it sends ARP replies mapping all IPs to the local MAC address. Also, it can flood the local network with random MAC addresses (like macof), causing switches to send packets to all ports.
A+ is a powerful and efficient programming language. It embodies a rich set of functions and operators, a modern GUI with many widgets and automatic synchronization of widgets and variables, asynchronous execution of functions associated with variables and events, dynamic loading of user compiled subroutines, and many other features. Execution is by a rather efficient interpreter.
Aps is a small tool for analyzing network traffic. It prints out a great deal of information about the relevant protocols including TCP, UDP, ARP, and ICMP. It allows you to filter IP addresses, hardware addresses, ports, and specific protocols. It comes with a little GTK-GUI displaying packet counters for each protocol.
ArcEm is a register level emulator of the Acorn Archimedes A4x0 system based around the ARM microprocessor. It is distributed with ARM Linux binaries and will boot ARM Linux and Acorn's RISC OS 3.1. It runs under X, Win32, and RISC OS. It is based on the release of the ARM emulator core by ARM Ltd, although this has been heavily modified for the emulation. It is a reasonably accurate register level emulation and as such should run pretty much anything.
Ari's Yahoo Client is a compact, easy-to-use, text-based client for Yahoo! Messenger, based on yahoolib as distributed with GTKYahoo. Ari's Yahoo Client supports displaying your buddy list with the status of each person on it, displaying incoming messages from any Yahoo! ID, and sending messages to any Yahoo! ID (whether or not it is on your buddy list).