sends ICMP_ECHO requests to network hosts

oping

sends ICMP_ECHO requests to network hosts

oping uses ICMP packages (better known as "ping packets") to test the reachability of network hosts. It supports pinging multiple hosts in parallel using IPv4 and/or IPv6 transparently.
plugin for enhanced privacy in pidgin

pidgin-privacy-please

plugin for enhanced privacy in pidgin

pidgin privacy please is a pidgin plugin to stop spammers from annoying you. You can block messages from certain users, block messages from people who are not on your contact list and suppress repeated authorization requests. Optionally, senders of blocked messages can be notified with an auto-reply.
Simple GUI, tabbed preferences dialog

paprefs

PulseAudio Preferences

PulseAudio, previously known as Polypaudio, is a sound server for POSIX and WIN32 systems. It is a drop in replacement for the ESD sound server with much better latency, mixing/re-sampling quality and overall architecture.
universal steganographic tool

outguess

universal steganographic tool

OutGuess is a universal tool for steganography that allows the insertion of hidden information into the redundant bits of data sources. The nature of the data source is irrelevant to the core of OutGuess.
Portscan detection daemon

portsentry

Portscan detection daemon

PortSentry has the ability to detect portscans(including stealth scans) on the network interfaces of your machine. Upon alarm it can block the attacker via hosts.deny, dropped route or firewall rule. It is part of the Abacus program suite.
PulseAudio sound server

pulseaudio

PulseAudio sound server

PulseAudio, previously known as Polypaudio, is a sound server for POSIX and WIN32 systems. It is a drop in replacement for the ESD sound server with much better latency, mixing/re-sampling quality and overall architecture.