Angry IP Scanner (or simply ipscan) is an open-source and cross-platform network scanner designed to be fast and simple to use.  It is widely used by network administrators and just curious users around the world, including large and small enterprises, banks, and government agencies. It is used to scan IP addresses and ports as well as has many other features. Being supportive for cross-platforms, it runs on Linux, Windows, and Mac OS X, possibly supporting other platforms as well.

AngularJS is an open-source web application framework, maintained by Google and community, that assists with creating single-page applications, one-page web applications that only require HTML, CSS, and JavaScript on the client side. Its goal is to augment web applications with model–view–controller (MVC) capability, in an effort to make both development and testing easier.

An animated GIF is a file that contains within the single file a set of images that are presented in a specified order. Animated GIFs are frequently used in Web ad banners. Essentially, they are graphic images on a Web page that moves.

Animation is the process of creating a continuous motion and shape change illusion by means of the rapid display of a sequence of static images that minimally differ from each other. The illusion—as in motion pictures in general—is thought to rely on the phi phenomenon. Animators are artists who specialize in the creation of animation.

A method for giving users access to files that are publicly available without having the need to identify themselves to the server. Using an FTP program or the FTP command interface, the user enters "anonymous" as a user ID. 

Anonymous Web surfing allows a user to visit Web sites without allowing anyone to gather information about which sites the user visited. Services that provide anonymity disable pop-up windows and cookies and conceal the visitor's IP address. 

The primary organization for fostering the development of technology standards in the United States. Long-established computer standards from ANSI include the ASCII and SCSI.  

Apache Ant is a software tool for automating software build processes. It was developed to overcome the problems arising in Make, a unix based build tool. Ant uses XML to describe the build process and its dependencies, whereas Make uses Makefile format.

A type of computer program used by financial institutions to analyze customer data and detect suspicious transactions. Anti-laundering systems filter customer data, classify it according to level of suspicion and inspect it for anomalies.  

A protocol that ensures IP packet-level security by making it impossible for a hacker to intercept message packets and insert changed packets into the data stream between a source computer and a destination computer. 

An anti-theft system is any device or method used to prevent or deter the unauthorized appropriation of items considered valuable.

A computer program that helps to detect, prevent, confine, and remove malicious programs such as viruses, malwares, and worms.

A computer program that detects, prevents, and takes action to isolate or remove malicious software programs, such as viruses, keyloggers, spywares, adwares, and worms.

In IPv6, anycast is the communication between a single sender and the nearest of several receivers in a group. Anycasting is designed to let one host initiate the efficient updating of router tables for a group of hosts.  

An open source web sever that runs on most UNIX-based operating systems (such as Linux, Solaris, Digital UNIX, and AIX), on other UNIX/POSIX-derived systems (such as Rhapsody, BeOS, and BS2000/OSD), on AmigaOS, and on Windows 2000.   

  An open source distributed database system for storing and managing large amounts of data across commodity servers. It can serve as a real-time data store for online transactional applications and a read-intensive database for large-scale BI systems.