Can you use dust extraction or vacuum hose that is not festool? can you find adapters that will fit on the tool that is not festool?

Yes, you can use other brands of dust extractors / vacuums. The port has a 1" outer diameter. If your hose is not that diameter, it should be easy to find an adapter for it.Festool's system approach to tool design just makes it easy for all of their components and tools to work seamlessly together.