Hi folks, as noted on https://github.com/freedomofpress/securedrop/blob/develop/LICENSE (and the i18n mirror, https://github.com/freedomofpress/securedrop-i18n/blob/develop/LICENSE), SecureDrop is under the AGPL3, including all strings/translations. However, when setting up Weblate, we never changed the license displayed in its UI to match, so it defaulted to “proprietary/none”. We’ve now fixed this – you can see this information in https://weblate.securedrop.org/accounts/profile/#licenses
Please don’t hesitate to reply to this post if you have any questions about the license or this configuration fix!