If you are using ONLYOFFICE editors together with Seafile, you probably will be glad to hear that we have released Zotero and Mendeley plugins. From now on you can easily create bibliographies in our editors!
Quick reminder: ONLYOFFICE has online editors for documents, spreadsheets, and presentations that you can use within Seafile.
It seems to me, I can’t post any links here, but you can find ONLYOFFICE and the new plugins on GitHub. Will be happy to hear your feedback.