Trix is an RTE editor for Everyday Writing for the TYPO3 CMS. Offer your backend users an easy to use editor to compose beautifully formatted text. Check out the official demo of Trix.
Uninstall default CKeditor from TYPO3 official distribution:
composer remove typo3/cms-rte-ckeditor
Run the following command to install Trix Editor for TYPO3:
composer require atkins/t3-trix