[mpancha]

Is there a freeware app that will let me view Visio files in OS X?

[JKT]

Not that I know of, but OmniGraffle Pro can open Visio files if they are saved in the most recent formats (from the past two years or so). You can get free 24 hour trial licences from the OmniGroup store for OmniGraffle Pro that let you use all its functions, so if this is something you only want to do once or very infrequently, you could use it this way.

[CatOne]

OmniGraffle will do it -- but the files must be stored in Visio's XML format, not in the proprietary format.

OmniGraffle is a great application.