I am trying to find a program or application that would allow co-workers to view maps and various layers produced with QGIS but not have the ability to alter or modify the data. It would be nice to produce something more interactive than just sharing a PDF map, any suggestions of a way to proceed??
You can customise QGIS, so you can remove certain toolbars and menus very easily.
So while it would not make the data read only, it would remove all of the tools to edit the data. This in turn also makes it easier for the colleagues to use QGIS as it is a bit simpler.