OnLive Desktop, a free app available on iTunes, lets you run virtual versions of Microsoft Word, Excel, and PowerPoint on your iPad. The programs run on remote servers, but given a reasonably fast Internet connection, it feels as if you're working on a desktop. The app has accurate handwriting recognition as well as an onscreen keyboard.
Paid versions add Internet Explorer, Photoshop, and other applications. Free and Plus versions come with 2 gigabytes of cloud storage; Pro gives you 50 GB. Versions for Android devices, iPhones, PCs, and Macs are in the works.
Cost: Free to $4.99 (Plus) or $9.99 (Pro) per month.
CAITLIN BERENS writes about business innovation and entrepreneurs. Before Inc., she worked at Billboard, SELF, and Better Homes and Gardens. She attended Drake University, and lives in Brooklyn, New York. @CaitlinBerens