The Document Foundation (TDF) has been strongly opposing Microsoft's practices lately. It accuses the Windows maker that it uses absurdly complex XML schemas to trap users and even last year, it urged its customers to abandon Windows 10 for Linux distributions.
Now, it has turned its sights on a supposed ally, OnlyOffice, explicitly labeling the rival productivity suite as “ fake open-source .” According to TDF, OnlyOffice is partnering with Microsoft, defaulting to Microsoft file formats instead of supporting open standards.




