The V-Ray mesh viewer is a simple tool that allows you to preview V-Ray mesh and alembic files.
The V-Ray mesh viewer can be used to view both static as well as animated meshes. Once you run it, the tool will ask you to navigate and point to the .vrmesh or .abc file you want to preview. Once you've located the file you want to view and click Open, You will see the mesh.
You can navigate around the mesh by holding Alt and then using the Left mouse button to Rotate, the Middle mouse button to Pan and the Right mouse button to Zoom.
The mesh viewer tool is installed along with V-Ray for Modo and can be found in C:\Program Files\Chaos Group\V-Ray\Modo x64\bin. It can be launched directly from the executable file in that tools folder or from the Windows Start > All Programs > Chaos Group > V-Ray for Modo x64 >Tools > V-Ray mesh viewer.