InfoPath Dev

Hi Sandeep and welcome to the forums!

InfoPath is actually not a proprietary format from Microsoft, but is, in fact, completely XML standards compliant.  If you change the .xsn extension to a .cab extension, then you can unpackage the template and look at all the underlying files.  All of the files will be free text that you can read, unless you wrote managed code, which will be compiled into DLLs.

I have not done much ASP.NET programming, so I don't know how well I can answer that question, but we have made a "FormsViewer" server that takes XSNs made by you and servers them up over HTTP to your browser.  It's not as feature rich as the others you mentioned, but it does work for simple viewing.

In addition, we have a great product which we have spent a great time developing, testing, and deploying called Database Accelerator that allows you to submit XML into the web service and shred it into a relational database via a mapping that you define in the administration tool.  You spoke of writing a web service, but why put all of your money and effort into that when you could use ours for a fraction of the cost?  Also, shredding XML into relational tables is just the beginning when it comes to DBXL.  You can also define fine-grained permissions, use the SharePoint web parts to display the documents that you have submitted to DBXL, and use any of the predefined Document Types to gain access to workflow, e-mail notifications, knowledge base articles, and anything else you can think of!  Also, we're only a few weeks away from releasing version 2.1.

I really think you would find our products useful.  Take a look on our website, and send me an e-mail if you would like a free demo.  http://www.qdabra.com/en/products/