TunnelPoint: The BDC for SharePoint in the Cloud
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TunnelPoint is a hosted service provided by Zevenseas. It connects external services (for example SOAP web services) to SharePoint List data in your SharePoint Site. TunnelPoint uses the built-in SharePoint SOAP web services exposed by your SharePoint environment to read and write list data. Really, all you need to do is log in to TunnelPoint using your TunnelPoint account and use the web interface provided to configure which external services should map to which lists in your SharePoint site.