iView4D is a free viewer for files in the Fledermaus file format.
iView4D is a free viewer for files in the Fledermaus file format. iView4D replaces the older iView3d and supports SD and Scene files created in Fledermaus 7 as well as being backwards compatible with version 6. This program contains only the basic viewing capabilities of Fledermaus but is freely downloadable from the link at the bottom of this page. Sample datasets are also available that show some of the functionality of Fledermaus.