All these depend a lot on the app in question. Native mac apps for example get a whole tabbing system for free so long as they support multiple windows (and mo

All these depend a lot on the app in question. Native mac apps for example get a whole tabbing system for free so long as they support multiple windows (and most apps that one might want tabs in do). Deep linking is not difficult to implement in native apps and in fact some do. As far as tying data to devices goes, with the exception of apps built around databases this is usually trivially changed by placing the data in question in a folder synced with SyncThing/iCloud/OneDrive/etc and most importantly gives you the choice, whereas many web apps will happily keep you pent up in their cloud with little or no capability to export full-fidelity data.