Aspose.Form is a GUI based InfoPath management component that enables .NET web applications to fill & view InfoPath dynamic forms or templates without using Microsoft InfoPath and also supports to save Aspose.Form data as XML & InfoPath XML too.
InfoJet Service is a .NET class library to publish InfoPath Forms to the web. InfoJet Service 1.2 supports majority of functions of InfoPath 2003 SP1. http://www.infojetsoft.com