Free Post-Processing Services
C4Gnet.XYZ GNSS Online Post Processing - powered by Trimble Online Processing App
Works throughout Louisiana and some parts of Mississippi and Texas.
Get a Free C4Gnet.XYZ GNSS Online Post Processing Service Account, user accounts are available for the C4Gnet.XYZ GNSS Online Post Processing Service which requires a yearly free subscription that is available simply by asking one of the C4Gnet.XYZ administrators. To get a free user account, first Register Here then send an email to
Here is a list of other free online GPS post-processing services:
- OPUS: (Currently Under Government Shutdown) NGS GPS Data Processing Online Positioning User Service
- CSRS-PPP: Canadian Spatial Reference System, Natural Resources Canada
- AUSPOS: Geoscience Australia
- GAPS: University of New Brunswick
- APPS: Jet Propulsion Laboratory
- SCOUT: Scripps Orbit and Permanent Array Center (SOPAC). University of California, San Diego
- magicGNSS: GMV
- CenterPoint RTX: Trimble Navigation
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