PPPx is a cross-platform multi-GNSS data-processing software package supporting SPP / PPP / RTK / TDP with LSQ, EKF and FGO solvers across GPS, GLONASS, Galileo, BeiDou-2/3 and QZSS. Free for academic and non-commercial use.https://pppx.devhttps://pppx.dev/blog/introducing-pppxhttps://pppx.dev/blog/introducing-pppxPPPx is a cross-platform multi-GNSS data-processing package — SPP, PPP, RTK and TDP across five constellations, with LSQ, EKF and FGO solvers.Wed, 17 Jun 2026 00:00:00 GMT