- JavaScript
- JSFiddle (https://jsfiddle.net/)
- CodePen (https://codepen.io/)
- JS Bin (https://jsbin.com/)
- HTML/CSS
- JSFiddle (https://jsfiddle.net/)
- CodePen (https://codepen.io/)
- JS Bin (https://jsbin.com/)
- SQL
- SQL Fiddle (http://sqlfiddle.com/)
- DB Fiddle (https://www.db-fiddle.com/)
- Rextester (https://rextester.com/l/sql_server_online_compiler)
- Python
- Repl.it (https://repl.it/languages/python)
- PythonAnywhere (https://www.pythonanywhere.com/)
- Trinket (https://trinket.io/python)
- Java
- Repl.it (https://repl.it/languages/java)
- JDoodle (https://www.jdoodle.com/online-java-compiler/)
- Ideone (https://ideone.com/)
- C#
- Repl.it (https://repl.it/languages/csharp)
- DotNetFiddle (https://dotnetfiddle.net/)
- Ideone (https://ideone.com/)
- PHP
- Repl.it (https://repl.it/languages/php)
- PHPFiddle (https://phpfiddle.org/)
- 3v4l (https://3v4l.org/)
- C++
- Repl.it (https://repl.it/languages/cpp)
- Ideone (https://ideone.com/)
- Wandbox (https://wandbox.org/)
- TypeScript
- Repl.it (https://repl.it/languages/typescript)
- TypeScript Playground (https://www.typescriptlang.org/play/index.html)
- TS Playground (https://tsplayground.com/)
- Shell
- Repl.it (https://repl.it/languages/bash)
- JSFiddle (https://jsfiddle.net/)
- CodePen (https://codepen.io/)