What are the best iPhone Apps for managing a small business from the road?

Ring Central Mobile It lets you make calls from your iPhone using your business phone # (800 or normal). This is great for keeping your cell number private from you customers.

oDesk - Lets you manage your team room from your phone. Can view screen shots, etc from your contractors. Would be better if you could post jobs and hire from the app.

Trillian - An instant messenger client that works with all the major IM networks. I use this to communicate with my VMs on the go.

Analytics App - It's the best iPhone client for google analytics. Some features, like viewing stats for today, actually work better than the full browser version from google.

Ego - If you just want some simple analytics, ego is an easy to get the basics. It works with google analytics, feedburner, twitter, ember, mint, squarespace, and vimeo. It only gives you very basic info, but sometimes thats all you need

Insight - An iphone client that lets you manage your basecamp projects.

DocScanner - Scan a document by taking a picture of it with your phone. It's great for when you need to sign something, and send it back as PDF

Shoeboxed - Keep track of your expenses/receipts from your phone.

Paypal - Lets you see your paypal account history and make payments. Good for seeing if someone sent you money, but would be better if you could send a paypal invoice from it.

TweetDeck - In my opinion the best all round twitter client for the iphone. It's extremely powerful, and works even better if you also use their desktop client. It's one weakness is doing adhoc searches of twitter is not as easy as it should be. I keep tweetie around just for doing searches.

Quickbooks Online - They don't have an app from the app store, but you can put a button on your home screen by pressing the + button in mobile safari. Browse to https://qbo.intuit.com/m in safari.

SEO Ranking - I use this app to track my site's rank on google for a variety of keywords. It has a historical graph so you can track your progress over time. The history makes it better than most of the desktop software I've used for this. I just wish this service was hosted in the cloud so I could access it from both web and iphone. Entering a ton of keywords is a pain on the iphone (especially since you probably already have them in CSV somewhere).

Nozbe - This is the best GTD software I have been able to find. It requires a subscription from the Nozbe website. The best place to have your todo list is on a device that you always have with you. I'm awful about todo lists, but I at least have a fighting chance with nozbe.

Shopkeeper - This is the iPhone client for administering a Shopify ecommerce site. I just recently switched one of my sites from volusion to shopify, and an iPhone client was one of the reasons. I've been happy with it so far.

Outpost - Another good basecamp project management client. I don't use this one, but I know several people who love it.

iClass Mail - Check your snail mail from your iphone! While a bit pricey, this app is worth it if you have Earth Class Mail. This lets you see what you have received, read scanned versions, and schedule to pickup/forward mail and packages. It's almost like having your snail mail delivered to you on the road. NOTE: It does require an account with Earth Class Mail

WordPress - Manage your Wordpress sites with this iPhone App. Allows you to post new material, and edit old posts. You can view your stats and do almost everything you can do in the online version.

Things

This is currently my favouring GTD task management app it works either standalone or in conjunction with a desktop app (Mac only). Its really easy to use and instantly on (almost) supports all GTD functions. I have looked at most of the todo lists available and this is my favourite and the one I currently use. More details about my productivity stuff see my blog .