I have been working in construction industry for about 7 years and we found a solution that does this. We use it for wireless bar code reading and GPS tracking. We can customize the forms on-the-fly which saves us a lot of time over a customized solution. The company that makes the product is Westlake out of LA I think. There website is www.westlakesoftware.com. Their product is call AirMobility.net. They made a custom Extranet for us for our company to use but their main product site is www.airmobility.net. We found this service set up to make it pretty easy for us to migrate the information to our back office system. We use the technology and route it to 50 different servers nationally; has worked perfectly for about three years. I donę° know if this is what you are looking for but it works for us.