I know that LibreOffice Writer can facilitate subscripts and superscripts in ordinary, non-formula, text—when I copy and paste such things from Microsoft Office Word 2007 documents LibreOffice Writer manages to accommodate them. My LibreOffice Writer version is 3.6.4.
I haven't managed to find any better place to ask this question, if there is please direct me to it. I am running 12.10 if it is relevant.