Diet Coda lets Web developers leave their notebooks at home. The $19.99 code editor for the iPad from Panic, Inc., is portable friendly, including an adaptive keyboard that tunes itself to programming languages for making it fast and easy to work with remote files.
Diet Coda can work with multiple servers. You can see the two servers I regularly work with here. Tapping the plus (+) thumbnail lets you add more servers.
Click here to read our full review of Diet Coda.