Can it be used completely offline and off-the-grid while still supporting work-flows between peers? Can the documents created easily be shared with peers not us

Can it be used completely offline and off-the-grid while still supporting work-flows between peers? Can the documents created easily be shared with peers not using it? Is one tied to other products due to this product, like OS, certain hardware and other things? Who has authorative power over the software and it's updates?