The TBC Core Free Viewer does exactly this - send them a VCE File with Predefined Views setup (Defined Views) and they can open the file and view the data without a license.
Failing that we have Connect - but that means exporting data and them knowing how to open files etc. - Connect Desktop also works.
Our Vianova Team also have a Viewer Portal called Easy Access - that would be a good tool to use but alas it is not connected to TBC or TBC Data.... yet ....
Alan