Let's put it this way, both are part of a larger effort to put the web back in tracks by having more people self-host their data and web services. Then sandstor

Let's put it this way, both are part of a larger effort to put the web back in tracks by having more people self-host their data and web services. Then sandstorm uses a third party google service to track visitors while cozy and yunohost use a self-hosted instance of piwik. One of those is not putting his money where his mouth is... Sandstorm is made from an ex-google employee while cozy has the founder of the european branch of mozilla in its ranks. Then there is the AMD64 limitation of sandstorm, while the other offer support for ARM, the de facto architecture for a low consumption personal server. I think the sandstorm.io website is dense and hard to comprehend, it's not to the point and from the get go I can tell it's pretending to be something it is not (an OS). Also the sandstorm demo feels clunky to me and I experience random crashes and error messages while trying apps in sandstorm. In the end my preference goes to yunohost because it's not from a funded startup with a full team which may explain why it stayed simple and within reach. IMHO ArkOS is closer to freedombox than yunohost, also supporting ARM is the feature not a limitation as it seems obvious that the personal self-hosted server is running on cheap, low consumption embedded ARM. To me a curious limitation is not supporting ARM.