AvisFV

AvisFV is a free viewer for the FITS file format, critical in astronomy and common in medical imaging and industrial analysis. Designed for Windows 11 through 7, it also works on most Linux distributions and macOS when using WINE. The software, Astro-vis Fits Viewer, offers a simple way to open and examine multi-dimensional scientific data sets. Whether you're working with celestial images, MRI scans, or technical radiographs, AvisFV delivers core viewing functionality without cost. It's an accessible solution for professionals and amateurs alike who require reliable access to FITS content across a range of hardware and operating systems.