While many OTDR manufacturers provide proprietary tools, several high-quality, vendor-neutral options are available for Windows and Linux:
Finding a reliable is essential for fiber optic technicians and network engineers who need to analyze Optical Time-domain Reflectometer (OTDR) trace data without tied-down hardware. An .sor file —which follows the Telcordia SR-4731 standard—contains critical information about fiber links, including distance, reflectance, loss, and attenuation. Top Free SOR File Viewers for Desktop sor file viewer free download