PocketPC?
I use a Palm, and I use it for almost everything. It does flight planning, stores all the GoM lease blocks, all the platforms, heliports, hospitals, airports, and anything else I might need, keeps my logbook, travel expenses and mileage, calendar, contacts, and anything else I need. Palm was the first, and is still the best, OS for PDAs. I have a Tungsten T3, a little dated, but it's still more powerful than the last PC I had - more memory, a faster processor, and uses SD cards for permanent storage. I also use it for driving directions; connected to my GPS, it gives me voice driving directions to any address in the USA.