There is now a fork of #OnlyOffice called Euro-Office. A few times I’ve heard some people express doubts about whether OnlyOffice is truly #OpenSource. At first glance, the question seems easy to answer: OnlyOffice is released under the AGPLv3. But the developers believe they’ve found a way to prevent forks: https://www.onlyoffice.com/blog/2026/03/onlyoffice-flags-license-violations-in-euro-office-project-by-nextcloud-and-ionos They write that the AGPLv3 allows for the addition of “additional conditions” to the license. However, Section 7 refers to “Additional permissions”: https://www.gnu.org/licenses/agpl-3.0.html.en#license-text “Conditions” is not the same as “permissions.” If OnlyOffice were to prevail with its interpretation, then AGPLv3 would not be an open-source license.