Argus

Argus was originally designed to monitor servers and network connections in a mission-critical ISP (Internet Service Provider) environment, and scales well from small-businesses through large enterprises. It will monitor nearly anything you ask it to monitor
(TCP + UDP applications, IP connectivity, SNMP OIDS, Programs, Databases, etc).

Argus was originally designed to monitor servers and network connections in a mission-critical ISP (Internet Service Provider) environment, and scales well from small-businesses through large enterprises.

Ark

Archives can be viewed, extracted, created and modified from within Ark. The program can handle various formats such as tar, gzip, bzip2, zip, rar and lha (if appropriate command-line programs are installed). Ark can work closely with Konqueror in the KDE environment to handle archives, if you install the Konqueror Integration plugin available in the kdeaddons package.

armorsurf

Armorsurf features: Secret installation prevents anyone from detecting that ArmorSurf is installed;
Your browsing activities and files are hidden from others who use your computer;
Anonymous proxy service hides your IP address to prevent anyone from tracking your activities (optional);
Password protection on start-up, minimize, standby, and hibernate;
Your files are encrypted and unreadable outside of ArmorSurf;
Your browsing history, auto-complete history, and website cookies are inaccessible outside of ArmorSurf;

arphaxad

arphaxad is a tool providing fast subnet arp-request based scanning. It is also able to isolate a specific host (just by passing the option -p <ip addr>) from the Ethernet-based network.

Arudius

Arudius is a Linux live CD with tools for penetration testing and vulnerability analysis. A so-called "Linux live CD" is essentially a Linux operating system that is bootstrapped and run directly from a standard CD-ROM. This allows for improved portability of the operating system and for running a variety of Linux software on almost any physical system without affecting the host operating system installed on the hard disk. This is the concept that Arudius exploits as well. Currently, Arudius features more than 140 different security tools and packages.

aswMBR

aswMBR is the rootkit scanner that scans for TDL4/3, MBRoot (Sinowal), Whistler and other rootkits.

This is a standalone cleaning tool, not a full-featured antivirus program.
From Avast!

Attack Surface Analyzer

Attack Surface Analyzer is developed by the Security Engineering group, building on the work of our Security Science team. It is the same tool used by Microsoft's internal product groups to catalogue changes made to operating system attack surface by the installation of new software.

Attack Surface Analyzer takes a snapshot of your system state before and after the installation of product(s) and displays the changes to a number of key elements of the Windows attack surface.

Attack Tool Kit

The acronym ATK stands for Attack Tool Kit. It was first developed to provide a very small and handy tool for Windows to realize fast checks for dedicated vulnerabilities. In the meanwhile it is a combination of security scanner (e.g. Nessus) and exploiting framework (e.g. MetaSploit). The special thing about ATK is that the tool is able to do the work without great interaction. But there is also always the possibility to vary and change the behaviour of the software. This concern the plugins, checking, enumeration and reporting.

AutoScan-Network

AutoScan-Network is a network scanner (discovering and managing application). No configuration is required to scan your network. The main goal is to print the list of connected equipments in your network.

System Requirements :
•Mac OS X 10.5 or later
•Microsoft Windows (XP, Vista)
•GNU/Linux
•Maemo 4
•Sun OpenSolaris

Avant Browser

..Designed to set in a Private Mode, Avant Browser does not keep web data in your computer. So anybody else sharing the same computer with you will not be able to see which sites and which pages you have visited and which files you have displayed during your private web browsing section...

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