Justin software supports a wide range of geodetic and surveying tasks. It combines high performance and flexibility for post-processing GNSS observations with GIS interface and features. The Justin software discloses all advantages of the Javad technology and has been optimized to deal the highest precision with the least amount of operator invention. Features include importing GNSS data (JAVAD.jps, RINEX, Hatanaka compressed, RTCM 3.0, CORS/SOPAC.apr, ANTEX.atx, P1C1 biases, precise ephemeris sp3, snap- and o-files), export to RINEX, export project data (c-files, snap- and o-files, PNEZD, csv, kml). The data toolkit features merging, splitting, picking, thinning, interpolation of data, enable/disable data via vertical profile or ground track, and table view, sky plot and ephemeris diagram.