France plans to phase out American videoconferencing services such as Microsoft Teams and Zoom within a year and replace them with a domestically developed app, Minister Delegate for the Civil Service David Amiel said on Saturday. The new app, called Visio, will be rolled out within the French government by 2027, with Prime Minister Sebastien Lecornu expected to formalize the move via a circular; officials cited data-sovereignty and security amid US cloud dominance.
OpenDesk, which is basically a German project to combine a number of Open Source projects. They got some rather large users already like the military. There seems to be a lot of interest in it as well. That suit includes a number of tools to replace Teams.