- APL
- Assembly
- C
- C#
- C++
- ClojureScript
- ColdFusion
- Crystal
- Dart
- Docker
- Elm
- Flutter
- GDScript
- Git
- Go
- Haskell
- HTML and CSS
- Ionic
- Java
- JavaScript
- Kotlin
- Kubernetes
- Multiple Languages
- .Net
- Nim
- Node.js
- OCaml
- Perl
- PHP
- Python
- R
- React
- Redis
- Regular Expressions
- Ruby
- Rust
- RxJS
- Scala
- Scratch
- Solidity
- SQL
- Svelte
- Swift
- TypeScript
- V
- Educational Visual CPU Simulator - Renato Cortinovis, Nicola Preda, Jonathan Cancelli, Alessandro Belotti, Davide Riva (JAVA, JAR)
- InterviewBit - Online C Compiler IDE
- JDoodle - Online C Compiler IDE
- Programiz - Online C Compiler
- SoloLearn
- InterviewBit - Online Java Compiler IDE
- JDoodle - Online Java Compiler Advanced IDE
- JDoodle - Online Java Compiler IDE
- Programiz - Online Java Compiler
- repl.it (including a separate Java/Swing)
- SoloLearn
- CodeHS
- CodePen
- CodeSandbox.io
- Esfiddle
- Grasshopper (Google account required)
- Hello Website - (Glitch) (Account requested, not required)
- InterviewBit - Online JavaScript Compiler IDE
- JSBin
- JSFiddle
- OneCompiler
- PlayCode
- Plunker
- SoloLearn
ℹ️ See also … Angular
- Nim Playground - nim-lang.org
- Hello Node - (Glitch) (Account requested, not required)
- Ideone
- MDX Playground
- SoloLearn
- Codepad
- InterviewBit - Online Python Compiler IDE
- Programiz.com
- Pynative.com
- Python Trinket
- Python Tutor
- Python.org Shell
- Repl.it - NiceDualPoint
- SoloLearn
- Try Python - Jakub T. Jankiewicz
- CodeSandbox.io
- Hello React - (Glitch) (Account requested, not required)
- jscomplete
- StackBlitz
- iHateRegex: regex for playground - Geon George
- Regex Tester and Debugger Online - Javascript, PCRE, PHP - Dan's Tools
- Regex101: build, test, and debug regex - Firas Dib (regex101.com)
- RegExr: Learn, Build, & Test RegEx - GSkinner Inc.
ℹ️ See also … AngularJS
- V Playground - vlang.io