A range of astronomy software is available and used by amateur astronomers, including software that generates maps of the sky, software to assist with astrophotography, observation scheduling software, and software to perform various calculations pertaining to astronomical phenomena.

* ATLAS, control software used on the Pendolino train

The terms architect and architecture are also used in the disciplines of landscape architecture, naval architecture and often information technology ( for example a software architect ).

A retargetable sound API called AHI was developed allowing these cards to be used transparently by the OS and software.

) Compositing software is used to combine images, and makes extensive use of alpha compositing techniques.

This was quickly remedied by First Byte Computers who developed an interface and software which allowed a " switched " joystick to be used with the majority of software titles.

Although cheap and effective in enabling use of some software that only used official ROM entry points for text output, this solution proved very slow because the Electron had to be placed into an 80-byte-pitch display to be able to get anywhere near to reproducing mode 7 and the CPU spent a lot of time drawing approximations of mode 7 characters and graphics that in a hardware solution would be achieved without any CPU processing.

The first used the same graphics processor as the BBC Micro in mode 7 — the SAA5050 — but used software to ensure that it was fed with the correct graphics data.

Although this produced a mode 7 that barely impacted upon CPU performance and gave the same visual quality as the BBC Micro, it remained compatible only with software that used the ROM routines for outputting text and graphics and still used 10 kB of memory for the display.

Tridgell was a major developer of the Samba software, analysing the Server Message Block protocol used for workgroup and network file sharing by Microsoft Windows products.

Token Ring would eventually be supported with the similar TokenTalk product, which also used the same Network control panel and underlying software.

The Aster computer could use the software written for the popular Tandy TRS-80 computer while fixing many of the problems of that computer, but it could also run CP / M software, with a big amount of free memory ( Transient Program Area, TPA ) and a full 80 × 25 display, and it could be used as a Videotext terminal.

A third mode was entered with a special boot floppy which turned the Aster into a Videotex terminal with a 40x25 display and a Videotex character set, The software used the built in RS232 interface of the Aster to control a modem through which it could contact a Prestel service provider.

Another important demand was that the computers could be used in a network ( Aster developed special software and hardware for that ).

The Artistic License refers most commonly to the original Artistic License ( version 1. 0 ), a software license used for certain free and open source software packages, most notably the standard Perl implementation and most CPAN modules, which are dual-licensed under the Artistic License and the GNU General Public License ( GPL ).

The CPC series was pitched against other home computers primarily used to play video games and enjoyed a strong supply of game software.

* ANIMAL ( image processing ), an interactive software environment for image processing

In computer systems, an algorithm is basically an instance of logic written in software by software developers to be effective for the intended " target " computer ( s ), in order for the target machines to produce output from given input ( perhaps null ).

* " Atlas " was the former name for ASP. NET AJAX, Microsoft software, a set of ASP. NET extensions providing Ajax functionality

It was designed to avoid some of the perceived problems with FORTRAN for backward compatibility with historic Buran ( spacecraft ) ALGOL software.

* Alfred ( software ), an application launcher for Mac OS X

The Amiga's native ability to simultaneously play back multiple digital sound samples made it a popular platform for early " tracker " music software.

Although the hardware is limited to four separate sound channels, software such as OctaMED uses software mixing to allow eight or more virtual channels, and it was possible for software to mix two hardware channels to achieve a single 14-bit resolution channel by playing with the volumes of the channels in such a way that one of the source channels contributes the most significant bits and the other the least.

The quality of the Amiga's sound output, and the fact that the hardware is ubiquitous and easily addressed by software, were standout features of Amiga hardware unavailable on PC platforms for years.

Expansion boards were made by Richmond Sound Design that allow their show control and sound design software to communicate with their custom hardware frames either by ribbon cable or fiber optic cable for long distances, allowing the Amiga to control up to eight million digitally controlled external audio, lighting, automation, relay and voltage control channels spread around a large theme park, for example.

See Amiga software for more information on these applications.

* Apache Software License, an open-source license for software

* Application Services Library, a process model for the maintenance of software applications

Speeding up the low portion of memory is particularly useful on 6502 derived machines because that processor has a faster addressing mode for the first 256 bytes and so it is common for software to put any variables involved in time critical sections of program into that region.

Some clever program counter catches meant that the ordinary system ROMs and any software using the OS calls could function without significant modification, making substantially more memory available for BASIC, View, Viewsheet and almost every other business application.

A software ROM worked around this by duplicating the data intended for a mode 7 display in memory.

The Internet has largely erased the distinction of shareware-most users now download the software directly from the developer's website rather than receiving it from another BBS user ' sharing ' it.

Content-control software, content filtering software, secure web gateways, censorware, and web filtering software are terms for software designed and optimized for controlling what content is permitted to a reader, especially when it is used to restrict material delivered over the Internet via the Web, e-mail, or other means.

Some content-control software includes time control functions that empowers parents to set the amount of time that child may spend accessing the Internet or playing games or other computer activities.

Companies that make products that selectively block Web sites do not refer to these products as censorware, and prefer terms such as " Internet filter " or " URL Filter "; in the specialized case of software specifically designed to allow parents to monitor and restrict the access of their children, " parental control software " is also used.

Internet filters, parental control software, and / or accountability software may also be combined into one product.

Filters can be implemented in many different ways: by a software program on a personal computer, via network infrastructure such as proxy servers that provide Internet access.

The use of Internet filters or content-control software varies widely in public libraries in the United States, since Internet use policies are established by the local library board.

The Children's Internet Protection Act and the June 2003 case United States v. American Library Association found CIPA constitutional as a condition placed on the receipt of federal funding, stating that First Amendment concerns were dispelled by the law's provision that allowed adult library users to have the filtering software disabled, without having to explain the reasons for their request.

An encrypted VPN can also be used as means of bypassing content control software, especially if the content control software is installed on an Internet gateway or firewall.

For example, there is P2P ( peer-to-peer ) Internet television software that can be used to watch TV on a computer.

BIND was widely distributed, especially on Unix systems, and is the dominant DNS software in use on the Internet.

BIND (), or named (), is the most widely used DNS software on the Internet.

The software license may also impose various other restrictions, such as restricted use over a network, restricted use on a server, restricted use in a combination with some types of other software or with some hardware devices, prohibited distribution over the Internet other than linking to author's website, restricted distribution without author's consent, restricted number of copies, etc.

The Great Internet Mersenne Prime Search ( GIMPS ) is a collaborative project of volunteers who use freely available software to search for Mersenne prime numbers.

Scott Kurowski wrote the Internet PrimeNet Server that supports the research to demonstrate Entropia-distributed computing software, a company he founded in 1997.

This has the advantage of running a Java applet in offline mode without the need for any Internet browser software and also directly from the integrated development environment ( IDE ).

Client software is available for every major operating system that supports Internet access.