| ACML | AMD Core Math Library | In English | → Mathematics |
| ADADL | ADA Design And Documentation Language | In English | |
| ADNX | Association pour la Documentation Numérique en XML | In French | → Libraries → Associations |
| AFUL | Association Francophone des Utilisateurs de Linux et des Logiciels Libres | In French | → Operating systems → Organizations and associations |
| AFUP | Association Francaise des Utilisateurs de PHP | In French | → Organizations and associations |
| ALGOL | Algorithmic Language | In English | |
| ALS | Ada Language System | In English | |
| ASN.1 | Abstract Syntax Notation One | In English | |
| AUFO | Association des Utilisateurs Français d'Oracle | In French | → Organizations and associations |
| BASIC | Beginner's All-purpose Symbolic Instruction Code | In English | |
| BFO | Basic Formal Ontology | In English | → Libraries |
| BNML | Business Narrative Markup Language | In English | → Economics |
| BPML | Business Process Markup Language | In English | → Economics |
| BPML | Business Process Modelling Language | In English | → Economics |
| BPML | Business Process Management Language | In English | → Data |
| BPQL | Business Process Query Language | In English | → Economics |
| BXML | Backbase eXtensible Mark-up Language | In English | |
| CFML | ColdFusion Markup Language | In English | |
| CHTML | Compact HyperText Markup Language | In English | → Telecommunications |
| CML | Chemical Markup Language | In English | → Chemistry |
| COBOL | Common Business-Oriented Language | In English | |
| CQL | Common Query Language | In English | → Networks, communication |
| DAML | DARPA Agent Markup Language | In English | → Data |
| DHTML | Dynamic Hypertext Markup Language | In English | → Data |
| DML | Data Manipulate Language | In English | → Data |
| DSL | Domain-Specific Language | In English | |
| DSSSL | Document Style Semantics and Specification Language | In English | → Document processing → Semiotics |
| DTD | Document Type Description | In English | → Data → Document processing |
| DTD | Document Type Definition | In English | → Document processing |
| ebXML | Electronic Business using eXtensible Markup Language | In English | → Data |
| ELP | English Language Program | In English | |
| EODM | EMF Ontology Definition Metamode | In English | → Data → Linguistics |
| ESSL | Engineering and Scientific Subroutine Library | In English | → Mathematics and natural sciences → Engineering, technology |
| FAP | FORTRAN Assembly Program | In English | |
| FicML | Fiction Markup Language | In English | → Literature |
| FOAF | Friend of a Friend | In English | → Networks, communication |
| FORTRAN | Formula Translation | In English | |
| GELLMU | Generalized Extensible LaTeX-Like MarkUp | In English | → Data |
| GML | Geography Markup Language | In English | → Geography |
| GOLD | General Ontology for Linguistic Description | In English | → Linguistics |
| GPL | GOAL Processing Language | In English | → Spaceflight engineering, astronautics |
| GPRN | GOAL Test Procedure Release Notice | In English | → Spaceflight engineering, astronautics |
| GPUR | GOAL Test Procedure Update Request | In English | → Spaceflight engineering, astronautics |
| GUM | Generalized Upper Model | In English | |
| HAL | Houston Aerospace Language | In English | |
| HAL | High-order Assembly Language | In English | |
| HALS | High-order Programming Language for Spacelab usage | In English | |
| HLAL | High-Level Assembler Language | In English | |
| HLTL | High-Level Test Language | In English | |
| HOL | High-Order Language | In English | |
| HOLC | High-Order Language Computer | In English | → Hardware |
| HR-XML | Human Resources eXtensible Markup Language | In English | → Personnel management → Labour, labour economics |
| HTLL | High-Test-Level Language | In English | |
| HTML | HyperText Markup Language | In English | → Data |
| IDL | Interface Description Language | In English | → Human-computer interaction |
| IODT | Integrated Ontology Development Toolkit | In English | → Data → Linguistics |
| J2EE | Java 2 Enterprise Edition | In English | |
| J2ME | Java 2 Micro Edition | In French | |
| JAAS | Java Authentication and Authorization Service | In English | |
| JCP | Java Community Process | In English | |
| JDE | Java Development Environment | In English | |
| JSR | Java Specification Request | In English | |
| JVM | Java Virtual Machine | In English | |
| KML | Keyhole Markup Language | In French | |
| LISP | LISt Processing | In English | |
| LMO | Langages et Modèles à Objets | In French | |
| LOLICA | LOgiciels LIbres en région Champagne-Ardenne | In French | |
| MASS | Mathematical Acceleration Subsystem | In English | → Mathematics |
| MathML | Mathematical Markup Language | In English | → Data → Mathematics |
| MLP | Machine Language Program | In English | |
| MUMPS | Massachusetts General Hospital Utility Multi-Programming System | In English | → Medicine |
| MXML | Macromedia Flex Markup Language | In English | |
| OCML | Operational Conceptual Modelling Language | In English | |
| OIL | Ontology Inference Layer | In English | → Libraries |
| OntoUCP | Ontology-based Unified Communication Protocol | In English | |
| OPML | Outline Processor Markup Language | In English | |
| OWL | Web Ontology Language | In English | → Data |
| PCGI | Perl Common Gateway Interface | In English | → Networks, communication |
| Portable Document Format | In English | → Data → Document processing |
|
| PERL | Practical Extraction and Report Language | In English | |
| PESSL | Parallel Engineering and Scientific Subroutine Library | In English | → Mathematics and natural sciences → Engineering, technology |
| PGML | Precision Graphics Markup Language | In English | → Image processing |
| PHP | Personal Home Page | In English | → Networks, communication |
| PHP | PHP Hypertext Preprocessor | In English | → Networks, communication |
| PLDI | Programming Language Design and Implementation | In English | |
| POJO | Plain Old Java Object | In English | |
| PROLOG | PROgrammation LOGique | In French | |
| PS | PostScript | In English | → Document processing |
| PSL | Program Statement Language | In English | |
| RDDL | Resource Directory Description Language | In English | → Data |
| SAML | Security Assertion Markup Language | In English | |
| SBML | Systems Biology Markup Language | In English | → Biological sciences |
| SBO | Systems Biology Ontology | In English | → Knowledge management → Libraries → Biological sciences |
| SEAL | Semantics-directed Environment Adaptation Language | In English | |
| SEXI | String EXpression Interpreter | In English | |
| SGML | Standard Generalized Markup Language | In English | → Data → Document processing |
| SMBL | Systems Biology Markup Language | In English | → Data → Biological sciences |
| SMIL | Synchronized Multimedia Integration Language | In English | → Computer-based techniques → Cinema, movies |
| SML | Spacecraft Markup Language | In English | → Spaceflight engineering, astronautics |
| SNOBOL | StriNg Oriented symBOlic Language | In English | |
| SPL | System Programming Language | In English | |
| SSML | Speech Synthesis Markup Language | In English | → Data |
| TTCN | Tree and Tabular Combined Notation | In English | → Networks, communication |
| UIML | User Interface Markup Language | In English | → Human-computer interaction |
| VML | Vector Markup Language | In English | → Image processing |
| VTML | Visual Tool Markup Language | In English | → Human-computer interaction |
| VXML | Voice eXtensible Markup Language | In English | → Data |
| WSCL | Web Services Conversation Language | In English | → Networks, communication |
| WSFL | Web Services Flow Language | In English | → Networks, communication |
| XAML | EXtensible Application Markup Language | In English | → Human-computer interaction |
| XBEL | XML Bookmark Exchange Language | In English | → Networks, communication → Libraries |
| XBL | XML (Extensible Markup Language) Binding Language | In English | → Data |
| XBL | EXtensible Bindings Language | In English | |
| XBRL | EXtensible Business Reporting Language | In English | → Economics |
| XFDL | Extensible Forms Description Language | In English | → Human-computer interaction |
| XFN | XHTML (EXtensible HyperText Markup Language) Friends Network | In English | → Data → Networks, communication" |
| XHTML | EXtensible HyperText Markup Language | In English | → Data |
| XML | EXtensible Markup Language | In English | → Data |
| XNCL | XML Namespace Catalogue Language | In English | → Data |
| XPath | XML Path Language | In English | → Data |
| XPDL | XML Process Definition Language | In English | → Management |
| XSL | EXtensible Stylesheet Language | In English | → Document processing |
| XSL-FO | EXtensible Stylesheet Language Formatting Object | In English | → Document processing |
| XSL-FO | XSL (EXtensible Stylesheet Language) Formatting Objects | In English | → Graphical processing |
| XSLT | EXtensible Stylesheet Language Transformations | In English | → Document processing |
| XUL | XML-based User interface Language | In English | → Human-computer interaction |
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