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ABAP (Advanced Business Application Programming, originally Allgemeiner Berichts-Aufbereitungs-Prozessor, German for "general report creation processor"[1]), pronounced as 'ah-bop', is a high-level programming language created by the German software company SAP. It is currently positioned, alongside the more recently introduced Java, as the language for programming the SAP Application Server, part of its NetWeaver platform for building business applications. The syntax of ABAP is somewhat similar to COBOL.

In computing, a compiler is a computer program that transforms source code written in a programming language or computer language (the source language), into another computer language (the target language, often having a binary form known as object code). The most common reason for wanting to transform source code is to create an executable program.

The A-0 system (Arithmetic Language version 0), written by Grace Hopper in 1951 and 1952 for the UNIVAC I, was the first compiler ever developed for an electronic computer. The A-0 functioned more as a loader or linker than the modern notion of a compiler. A program was specified as a sequence of subroutines and arguments. The subroutines were identified by a numeric code and the arguments to the subroutines were written directly after each subroutine code. The A-0 system converted the specification into machine code that could be fed into the computer a second time to execute the program.

An esoteric programming language (sometimes shortened to esolang) is a programming language designed as a test of the boundaries of computer programming language design, as a proof of concept, or as a joke. There is usually no intention of the language being adopted for mainstream programming, although some esoteric features such as visuospatial syntax have inspired practical applications in the arts. Such languages are often popular among hackers and hobbyists. This use of esoteric is meant to distinguish these languages from more popular programming languages.

The Open Programming Language (OPL) is an embedded programming language for portable devices that run the Symbian Operating System, which can be found on e.g. the Nokia 9200, 9300 and 9500 Communicator series mobile telephone/personal digital assistant (PDA) and the Sony Ericsson P800, P900, P910 series. On classic Psion PDAs such as the Series 3, 5/5mx, Series 7, and netBook/netPad, as well as the MC218, OPL is part of the standard application suite. OPL is also included in Psion Teklogix industrial handhelds such as the Workabout mx. OPL is an interpreted language similar to BASIC. A fully Visual Basic-compatible language OVAL has been also developed.

COMAL (Common Algorithmic Language) is a computer programming language developed in Denmark by Benedict Løfstedt and Børge R. Christensen in 1973. The "COMAL 80 PROGRAMMING LANGUAGE REPORT" contains the formal definition of the language.

ActiveBasic The site is written in Japanese only... WindowsAlgorithm2 Algorithm is a fully visual RAD system but it is not a strict programming language. It aims to help anyone create programs without any programming knowledge... Windows

This is an alphabetical list of BASIC dialects — interpreted and compiled variants of the BASIC programming language. Each dialect's platform(s), i.e., the computer models and operating systems, are given in parentheses along with any other significant information.

Aldor is a programming language with an expressive type system well-suited for mathematical computing and which has been used to develop a number of computer algebra libraries. Originally known as A#, Aldor was conceived as an extension language for the Axiom system, but is now used more in other settings.

A# (A sharp) is an object-oriented functional programming language distributed as a separable component of Version 2 of the Axiom computer algebra system. A# types and functions are first-class values and can be used freely in conjunction with an extensive library of data structures and other mathematical abstractions. A key design guideline for A# was suitability of compilation to portable and efficient machine code.