I have a web-based application, which integrates with QuickBooks through the QuickBooks Web Connector. This works great for desktop versions of QuickBooks. However, I'm looking to add support for QuickBooks Online, and the Web Connector can't be used with QuickBooks Online.
How do I integrate my application with QuickBooks Online? If possible, I'd like to use the web service that is already working with the Web Connector.
Please visit http://developer.intuit.com and click on the Integrate your app with QuickBooks link in the Intuit Partner Platform section. The link brings up our QuickBooks API documentation. You should focus on the V2 API if you want something that will be ready to use now. The V3 API will be released publically later this year and will allow you to integrate your application with the Global version of QuickBooks Online.
Register as a developer and if you have any further questions you can submit a support ticket and we'll get back to you.