RTE is an extension of the TYPO3 system that is added to the TYPO3 package. RTE is a kind of WYSIWYG ("What You See Is What You Get") text editor. RTE provides similar functionality to rich text editors like OpenOffice Writer or Microsoft Office Word.
tinymce_rte (tinymce_rte)—Rich Text Editor again based on TinyMCE, but this extension is more advanced and has a newer version. We can say that the general advantage of this text editor is there are more possibilities to manipulate tables that are created using this extension. You can include class, colors, borders, custom column widths, and do other manipulations with tables.