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If you're looking for more information on a specific programming language, and we don't have any information on the language you're interested in, you may request it on another page.
If you're looking how to do something specific in a language, see Help:Request a new programming task. But don't forget to check the existing tasks, first.

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If you would like more information about a language that already has a page, add the language to a list below. If the language is already on the list, but we still don't have much information on it, go on to "Getting your request fulfilled".

Getting your request fulfilled

If a regular Rosetta Code contributor knows the language you're asking about, (s)he may write some code. If none of the regular contributors knows the language, then it may not get any code.

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If you know someone who knows the language (or any language in this list), we'd be happy if you pointed them in our direction.
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Languages

Underrepresented

The following languages are underrepresented with examples compared to their relative importance. If you know or want to learn any of these languages, please consider adding examples.

Assembly languages
Boo
Bash musthave
Deluge
Dylan
Excel
Ezhil
Gema
Gosu
JOVIAL, embedded avionics and air traffic control system language
PASM, the Parrot assembly language.
Pharo
PIR, the Parrot intermediate representation.
Qi
Ra Lets you program in your native tongue (http://oahmad04.github.io/ra/)
RPG (Report Program Generator)
Self
VPython

No code

These languages have had categories created, but no one has written any example code yet.

Application Master - Specialist language running on VME mainframes only
ASP.Net
AspectJ
BLISS
Gentee
Hack (http://en.wikipedia.org/wiki/Hack_(programming_language)) a new language with gradual typing invented by Facebook.
NQP (Not Quite Perl)
PeopleCode - Wikipedia says, "is an (ool) object-oriented proprietary (case-insensitive) language used to express business logic for PeopleSoft applications."
SPARC Assembly - a very popular server chipset.

No description

There is no page to describe it, or such page exists but is empty. However, there are a few codes already, anyways.

No presence at all

These languages are nowhere on RC.

APEX
AppleScriptObjC (https://developer.apple.com/library/mac/releasenotes/ScriptingAutomation/RN-AppleScriptObjC/) A high level scripting/programming language that combines features of AppleScript and Objective C
Benton Harbor BASIC BASIC for the Heathkit H8 and H89 computers.
BitC (http://www.bitc-lang.org/), a low-level systems programming language with syntax similar to Standard ML and Haskell.
CBASIC A compiled BASIC for CP/M by Gordon Eubanks created for the IMSAI 8080 and other CP/M computers in 1977. It was available from Compiler Systems and then Digital Research beginning in 1981.
Charity (http://pll.cpsc.ucalgary.ca/charity1/www/home.html). Charity is a categorical programming language.
CHILL - CCITT High Level Language, a procedural programming language, which is mainly used internally by Siemens and Alcatel for telecommunications.
Cucumber
Cue (https://cuelang.org) - An executable config language that's a superset of JSON
DDC (http://www.haskell.org/haskellwiki/DDC) is haskell-like language with strict static types, type inference, tracking of mutability and side effects in the type system and default pass-by-reference semantics.
FileMaker / FileMaker Pro Scripts and Calculations - the former being an IDE-tokenized application-specific scripting language and the later a more ‘functional’ one (somewhat similar to Excel calculations).
Funnel (https://lampwww.epfl.ch/funnel/)
GPSS General Purpose Simulation System (developed from Gordon's Programmable Simulation System) is one of the first discrete simulation languages and was an influence on later system such as Simula
Joyce (note: One of the influential concurrent languages, probably similar to super pascal)
JSFuck (https://en.wikipedia.org/wiki/JSFuck) Esoteric subset of Javascript inspired by Brainfuck, only using 6 characters.
Mesa, early PARC language (Mesa at Wikipedia)
MUSH
Niakwa - a language that should go down in history
Pkl (https://pkl-lang.org) - An executable config language made by Apple
Powerscript (note: Ver 1.0 and Ver 2.0 are different)
PDP-8 Assembly - one of the most important minicomputers, practically creating the field.
RouterOS scripting language - for Mikrotik routers
SCL - Powerful, integer only, System Control Language (VME)
Shakespeare Programming Language - Can be found on Sourceforge
Splus
Telescript ([1])
thinBasic (http://www.thinbasic.com/)
Tutor
Tutorial-D (https://reldb.org/)
TXL
VO (CA-Visual Objects)
Zeno
ZIL
ZZT
قلب‬ (website) a Scheme-like, right-to-left, non-English based language

Need Syntax Highlighting Support

These languages lack syntax highlighting.

AmigaE
Arturo (Red/Rebol are quite close; but Arturo features different keywords and different syntax in many cases)
Astro (Python is quite close)
BBC BASIC
Befunge
Dafny
Dao
Dyalect
Ela
Elena
Forth
Kotlin
Logo
Mathematica
Maxima
Metafont
Nemerle
Nimrod (Python is quite close, Nimrod has a lot of distinctive keywords though.)
Objeck
Phix (Pygments lexer in 2.14.0 which became available 1st Jan 2023 but has not been updated on rc yet [hint hint])
Quorum
REALbasic (Visual Basic is very close)
RPL
Sather
Seed7
SuperCollider
SNOBOL4