We have just announced the developer preview 1 of ONLYOFFICE Editors with end-to-end encryption of documents. Everyone is very welcome to try it out. You can download the suite from our website.
And please share your feedback on our GitHub, we need as much information about your experience as possible to get closer to the final release.
Before you start, you need to connect ONLYOFFICE Desktop Editors to Nextcloud. We also advise you to read the article about how to set up your blockchain account and how to encrypt your documents in ONLYOFFICE.
Note: collaborative editing in the encrypted mode is not available in this developer preview.