Last updated: [Insert date] Version focus: 8.0.1 (stable release) Target users: Sailors, glider pilots, hikers, farmers, and meteorology enthusiasts What is zyGrib? zyGrib is a free, open-source weather visualization tool built around GRIB (GRIdded Binary) files – the standard format for weather forecast data. Instead of relying on a live internet connection at sea or in remote areas, users download compact GRIB files and view wind, pressure, temperature, precipitation, and cloud data offline.