Monaco Editor

The Monaco Editor is the code editor that powers VS Code. It is licensed under the MIT License and supports IE 11, Edge, Chrome, Firefox, Safari and Opera. source

Monaco Editor is a rich editor and validation for many codes like JavaScript, CSS, LESS, SCSS, JSON, HTML.

This editor also allows basic syntax colorization XML, PHP, C#, C++, Razor, Markdown, Diff, Java and many more.

This awesome software allows side by side live comparison and it supports all languages.

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