### Index

* [Algorithms](#algorithms)
* [APL](#apl)
* [Assembly](#assembly)
* [Bash](#bash)
* [C](#c)
* [C#](#csharp)
* [C++](#cpp)
* [ClojureScript](#clojurescript)
* [ColdFusion](#coldfusion)
* [Crystal](#crystal)
* [Dart](#dart)
* [DevOps](#devops)
* [Docker](#docker)
* [Elm](#elm)
* [Flutter](#flutter)
* [GDScript](#gdscript)
* [Git](#git)
* [Go](#go)
* [Gremlin](#gremlin)
* [Haskell](#haskell)
* [HTML and CSS](#html-and-css)
* [Ionic](#ionic)
* [Java](#java)
* [JavaScript](#javascript)
    * [AngularJS](#angularjs)
* [Kotlin](#kotlin)
* [Kubernetes](#kubernetes)
* [Multiple Languages](#multiple-languages)
* [.Net](#dotnet)
* [Nim](#nim)
* [Node.js](#nodejs)
* [OCaml](#ocaml)
* [Perl](#perl)
* [PHP](#php)
* [Python](#python)
* [R](#r)
* [React](#react)
* [Redis](#redis)
* [Regular Expressions](#regular-expressions)
* [Ruby](#ruby)
* [Rust](#rust)
* [RxJS](#rxjs)
* [Scala](#scala)
* [Scratch](#scratch)
* [Solidity](#solidity)
* [SQL](#sql)
* [Svelte](#svelte)
* [Swift](#swift)
* [TypeScript](#typescript)
    * [Angular](#angular)
* [V](#v)
* [Vim](#vim)


### Algorithms

* [Data Structures Visualization](https://www.cs.usfca.edu/~galles/visualization/Algorithms.html) - David Galles
* [The Algorithm Visualizer](https://algorithm-visualizer.org)


### APL

* [APLgolf](https://razetime.github.io/APLgolf)
* [ngn/apl](https://abrudz.github.io/ngn-apl)
* [TryAPL](https://tryapl.org)
* [TryAPL Mini](https://janiczek.github.io/tryapl-elm)


### Assembly

* [Command Challenge](https://cmdchallenge.com) - Command Challenge
* [Educational Visual CPU Simulator](https://github.com/Belotti01/CPU-Visual-Simulator) - Renato Cortinovis, Nicola Preda, Jonathan Cancelli, Alessandro Belotti, Davide Riva (JAVA, JAR)
* [OverTheWire](https://overthewire.org) - OverTheWire


### Bash

* [Terminus](https://web.mit.edu/mprat/Public/web/Terminus/Web/main.html) - MIT


### <a id="c"></a>C

* [InterviewBit - Online C Compiler IDE](https://www.interviewbit.com/online-c-compiler/)
* [JDoodle - Online C Compiler IDE](https://www.jdoodle.com/c-online-compiler/)
* [Programiz - Online C Compiler](https://www.programiz.com/c-programming/online-compiler/)
* [SoloLearn](https://code.sololearn.com/c)


### <a id="csharp"></a>C\#

* [OnlineGDB](https://www.onlinegdb.com/online_csharp_compiler)
* [Programiz - Online Compiler](https://www.programiz.com/csharp-programming/online-compiler/)
* [SoloLearn](https://code.sololearn.com/csharp)


### <a id="cpp"></a>C++

* [Coding Blocks](https://ide.codingblocks.com)
* [Coding Minutes](https://ide.codingminutes.com)
* [Compiler Explorer](https://godbolt.org)
* [InterviewBit](https://www.interviewbit.com/online-cpp-compiler/)
* [LabStack](https://code.labstack.com/cpp)
* [Online C++ Compiler](https://www.codinguru.online/compiler/cpp)
* [OnlineGDB](https://www.onlinegdb.com/online_c++_compiler)
* [SoloLearn](https://code.sololearn.com/cpp)


### ClojureScript

* [Replumb REPL](https://clojurescript.io)
* [Web REPL](http://clojurescript.net)


### ColdFusion

* [TryCF](https://trycf.com)


### Crystal

* [Compile & run code in Crystal](https://play.crystal-lang.org/#/cr)


### Dart

* [DartPad](https://dartpad.dev)
* [Replit](https://replit.com/languages/dart)


### DevOps

* [DevOps Dream](https://devops.games) - DevOps Dream
* [KodeKloud](https://kodekloud.com/kodekloud-engineer/)


### Docker

* [Play with Docker](https://labs.play-with-docker.com)


### Elm

* [Ellie](https://ellie-app.com)
* [Try Elm!](https://elm-lang.org/try)


### Flutter

* [Codepen](https://codepen.io/topic/flutter/templates)
* [Flutter Studio](https://flutterstudio.app)


### GDScript

* [GDScript](https://gdscript-online.github.io)


### Git

* [Git](https://learngitbranching.js.org/?NODEMO)


### Go

* [GO Lang Compiler](https://www.codinguru.online/compiler/go)
* [Go Playground](https://play.golang.org)
* [Go-Vim](https://go-vim.appspot.com)
* [SoloLearn](https://code.sololearn.com/go)


### Gremlin

* [Gremlify](https://gremlify.com)


### Haskell

* [Try Haskell](https://www.tryhaskell.org)


### HTML and CSS

* [CodePen](https://codepen.io)
* [CSSdeck](https://cssdeck.com)
* [Dabblet](https://dabblet.com)
* [Flexbox Froggy](https://flexboxfroggy.com) - Codepip
* [Flexy Boxes](https://the-echoplex.net/flexyboxes/)
* [Grid Garden](https://cssgridgarden.com) - Codepip
* [HTML, CSS, JavaScript](https://www.codinguru.online/compiler/html)
* [Learn advanced html and css](https://www.theodinproject.com/paths/full-stack-javascript/courses/advanced-html-and-css) - The Odin Project
* [Learn Intermediate html and css](https://www.theodinproject.com/paths/full-stack-javascript/courses/intermediate-html-and-css) - The Odin Project
* [LiveCode](https://livecodes.io) - LiveCode
* [Play Code](https://playcode.io)
* [SoloLearn](https://code.sololearn.com/web#css)
* [Tailwind Play](https://play.tailwindcss.com)


### Ionic

* [StackBlitz](https://stackblitz.com/fork/ionic)


### Java

* [InterviewBit - Online Java Compiler IDE](https://www.interviewbit.com/online-java-compiler/)
* [Java Compiler](https://www.codinguru.online/compiler/java)
* [JDoodle - Online Java Compiler Advanced IDE](https://www.jdoodle.com/online-java-compiler-ide/)
* [JDoodle - Online Java Compiler IDE](https://www.jdoodle.com/online-java-compiler/)
* [OnlineGDB](https://www.onlinegdb.com/online_java_compiler)
* [Programiz - Online Java Compiler](https://www.programiz.com/java-programming/online-compiler/)
* [repl.it](https://repl.it) (_including a separate Java/Swing_)
* [SoloLearn](https://code.sololearn.com/java)


### JavaScript

* [CodeHS](https://codehs.com/explore/sandbox/javascript)
* [CodePen](https://codepen.io)
* [CodeSandbox.io](https://codesandbox.io)
* [Esfiddle](https://esfiddle.net)
* [Grasshopper](https://grasshopper.app) *(Google account required)*
* [Hello Website - (Glitch)](https://glitch.new/website) *(Account requested, not required)*
* [InterviewBit - Online JavaScript Compiler IDE](https://www.interviewbit.com/online-javascript-compiler/)
* [JavaScript Compiler](https://www.codinguru.online/compiler/javascript)
* [JSBin](https://jsbin.com)
* [JSFiddle](https://jsfiddle.net)
* [Liveweave](https://liveweave.com) - Amit Sen
* [OneCompiler](https://onecompiler.com/javascript)
* [PlayCode](https://playcode.io/javascript)
* [Plunker](https://plnkr.co)
* [SoloLearn](https://code.sololearn.com/web#javascript)


#### AngularJS

> :information_source: See also &#8230; [Angular](#angular)

* [StackBlitz](https://stackblitz.com/fork/angularjs)


### Kotlin

* [Kotlin](https://play.kotlinlang.org)
* [Kotlin Playground](https://developer.android.com/training/kotlinplayground)
* [SoloLearn](https://code.sololearn.com/kotlin)


### Kubernetes

* [Play with Kubernetes](https://labs.play-with-k8s.com)


### Markdown

* [Markdown Editor](https://www.codinguru.online/compiler/markdown)


### Multiple Languages

* [CodeChef](https://www.codechef.com/ide)
* [GeeksforGeeks](https://ide.geeksforgeeks.org)
* [Ideone](https://ideone.com)
* [OnlineGDB](https://www.onlinegdb.com)


### <a id="dotnet"></a>.NET

* [.NET Fiddle](https://dotnetfiddle.net)


### Nim

* [Nim Playground](https://play.nim-lang.org) - nim-lang.org


### NodeJS

* [Hello Node - (Glitch)](https://glitch.new/node) *(Account requested, not required)*
* [Ideone](https://ideone.com)
* [MDX Playground](https://mdxjs.com/playground)
* [SoloLearn](https://code.sololearn.com/nodejs)


### OCaml

* [OCaml Playground](https://ocaml.org/play)
* [Try OCaml](https://try.ocamlpro.com)


### Perl

* [Perl](https://tryperl.pl)


### PHP

* [Codepad](http://codepad.org/?lang=PHP)
* [ExtendsClass](https://extendsclass.com/php.html)
* [PHP Online Compiler](https://www.codinguru.online/compiler/php)
* [PHPTester](http://phptester.net)
* [SoloLearn](https://code.sololearn.com/php)


### Python

* [Codepad](http://codepad.org/?lang=Python)
* [InterviewBit - Online Python Compiler IDE](https://www.interviewbit.com/online-python-compiler/)
* [Online Python](https://www.online-python.com)
* [Online Python Compiler](https://www.tutorialspoint.com/online_python_compiler.php) - Tutorialspoint
* [OnlineGDB](https://www.onlinegdb.com/online_python_compiler)
* [Programiz.com](https://www.programiz.com/python-programming/online-compiler/)
* [Pynative.com](https://pynative.com/online-python-code-editor-to-execute-python-code/)
* [Python Online Compilers](https://www.codinguru.online/compiler/python)
* [Python Trinket](https://trinket.io/python)
* [Python Tutor](https://pythontutor.com)
* [Python.org Shell](https://www.python.org/shell)
* [Repl.it - NiceDualPoint](https://repl.it/repls/NiceDualPoint#main.py)
* [SoloLearn](https://code.sololearn.com/python)
* [Try Python](https://trypython.jcubic.pl) - Jakub T. Jankiewicz


### R

* [myCompiler](https://www.mycompiler.io/online-r-compiler)
* [R-Fiddle](http://www.r-fiddle.org)
* [R Online Editors](https://www.codinguru.online/compiler/R)
* [Rextester](https://rextester.com/l/r_online_compiler)
* [SoloLearn](https://code.sololearn.com/r)


### React

* [CodeSandbox.io](https://codesandbox.io)
* [Hello React - (Glitch)](https://glitch.new/react) *(Account requested, not required)*
* [jscomplete](https://jscomplete.com/playground)
* [PlayCode](https://playcode.io/react)
* [StackBlitz](https://stackblitz.com/fork/react)


### Redis

* [Try Redis](https://try.redis.io)


### Regular Expressions

* [iHateRegex: regex for playground](https://ihateregex.io/playground) - Geon George
* [Pyrexp](https://pythonium.net/regex) - Cyril Bois
* [Regex Tester and Debugger Online - Javascript, PCRE, PHP](https://www.regextester.com) - Dan's Tools
* [Regex101: build, test, and debug regex](https://regex101.com) - Firas Dib (regex101.com)
* [Regexper](https://regexper.com) - Jeff Avallone
* [RegExr: Learn, Build, \& Test RegEx](https://regexr.com) - GSkinner Inc.


### Ruby

* [Codepad](http://codepad.org/?lang=Ruby)
* [SoloLearn](https://code.sololearn.com/ruby)
* [TryRuby](https://try.ruby-lang.org)


### Rust

* [Rust Playground](https://play.rust-lang.org)


### RxJS

* [StackBlitz](https://stackblitz.com/fork/rxjs)


### Scala

* [JDoodle](https://www.jdoodle.com/compile-scala-online)
* [Scastie](https://scastie.scala-lang.org)


### Scratch

* [Scratch.mit.edu](https://scratch.mit.edu/create)


### Solidity

* [ETH.Build](https://eth.build) - Austin Thomas Griffith
* [Remix IDE](https://remix.ethereum.org) - ethereum.org


### SQL

* [Extends Class](https://extendsclass.com/sqlite-browser.html)
* [SQLFiddle](http://sqlfiddle.com)
* [SQLite Online](https://sqliteonline.com)


### Svelte

* [StackBlitz](https://stackblitz.com/fork/svelte)
* [Svelte REPL](https://svelte.dev/repl)


### Swift

* [Online Swift Playground](http://online.swiftplayground.run)
* [SoloLearn](https://code.sololearn.com/swift)


### TypeScript

* [Playground](https://www.typescriptlang.org/play/index.html)
* [StackBlitz](https://stackblitz.com/fork/typescript)
* [TypeScript: TS Playground](https://www.typescriptlang.org/play)


#### Angular

> :information_source: See also &#8230; [AngularJS](#angularjs)

* [Plunker](https://plnkr.co)
* [StackBlitz](https://stackblitz.com/fork/angular)


### V

* [V Playground](https://play.vlang.io) - vlang.io


### Vim

* [Vim Adventure](https://vim-adventures.com) - Doron Linder
* [Vim Genius](http://vimgenius.com) - Vic Ramon, Rye Mason