Microsoft Excel is a desktop application but the company now offers a limited web edition which can be used for innovative purposes.
This is something that we have come to expect from Google through their Google Docs platform.
But Microsoft has launched a new project named ExcelMashup.com which highlights the capabilities of their online services.
The company spoke about this service:
Just using the Excel Services JavaScript API, a workbook stored on a public SkyDrive folder, and standard web technologies, you can create some really powerful apps that run in the browser (for example an app that combines Excel and Bing Maps to create a “Destination Explorer” mashup that shows stats on specific travel locations).
The ExcelMashup.com web site is a one-stop-shop for learning about how to get started developing rich, interactive mashups on your web site quickly using Excel Web App and the power of Excel formulas for calculation.