Dview is available in the /bin directory of your OpenStudio program directory for OpenStudio version <3.0.0. It is not included with OS 3.0.0.

[EDIT:] [Dview Dview can be downloaded here](https://beopt.nrel.gov/downloadDView).here.

Dview is available in the /bin directory of your OpenStudio program directory for OpenStudio version <3.0.0. It is not included with OS 3.0.0.