ckeditor
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CKEditor</title>
<script src="https://cdn.ckeditor.com/4.16.2/standard/ckeditor.js"></script>
</head>
<body>
<textarea name="editor1"></textarea>
<script>
CKEDITOR.replace( 'editor1' );
</script>
</body>
</html>