The Authoritative fork of Org mode's ODT exporter
This is a fork of Org's ODT backend and adds many useful improvements to that backend. This fork is authoritative because it is maintained by the original author of that backend.
package-archives. Once that is done, you can install the exporter with
(custom-set-variables '(package-archives (quote (("gnu" . "https://elpa.gnu.org/packages/") ("ox-odt" . "https://kjambunathan.github.io/elpa/")))))
In the Emacs
*Packages* menu, the entry for the ODT backend looks like
ox-odt 22.214.171.124 available ox-odt OpenDocument Text Exporter for Org Mode