MikeCapone writes: "For many professionals, tending to business while on vacation is a requirement. But don'(TM)t let that reality derail your trip. These days, you can do everything from scanning and signing documents to sending hands-free texts while driving--"all from your iPhone. We’ve rounded up the best office apps that let you take your show on the road, so you can spend more time sunbathing, and less time searching for the nearest fax machine. Did we mention that they're all free?"