AvisFV

AvisFV is a free FITS viewer designed for Windows 11, 10, 8, and 7, with compatibility for most Linux and Mac systems via WINE. The software specializes in viewing FITS files, the standard format in astronomy for images, spectra, and tables. Beyond astronomy, FITS is widely used in medical imaging, industrial analysis, and scientific research. AvisFV—short for Astro-vis Fits Viewer—offers a straightforward, no-cost solution for professionals and enthusiasts needing to access and examine FITS data. Its cross-platform potential through WINE makes it a versatile tool for diverse technical fields. No subscriptions, no fees—just reliable FITS viewing.