Various companies do LibreOffice support: https://www.libreoffice.org/get-help/p...

		pabs3 on June 20, 2021 \| parent \| context \| favorite \| on: Licenses alone do not govern behavior in open sour... Various companies do LibreOffice support: https://www.libreoffice.org/get-help/professional-support/ Probably there are companies for the other projects you name, or contracting random developers would work.