Seafile is a great software we modified to fit our needs. At this point most of the changes we made to Seafile make sure that files are encrypted on the users device.
Seafile already lets users simply encrypt repositories if they want. What did you actually change, just made it default and obligatory?
That fair enough - and tbh. it makes me feel somewhat better if the code is maintained and checked by another company from Germany.
BTW: Am I missing something, or is the upload of files over the web interface not supported?