4. Cardmunch.com. While it's tempting to focus on savings, we shouldn't forget that executives travel to broker revenue-generating deals. Cardmunch, a service of LinkedIn (LNKD), is designed to help file the business cards. As with TurboScan, users transform their smartphone camera into a scanner to capture card details. Photos are then sent to the service, where they are transcribed and made available for use in any contact management program. And of course, LinkedIn profile data is included automatically.