◼️ RegularSurface (2D maps)
◼️ 3D grids (corner-point)
◼️ Seismic cubes
◼️ Well data, line, and polygons
XTGeo supports some open data and vendor-specific formats for import/export (ROXAR RMS and Eclipse).
Don't forget to check out a recent talk on Subsurface Rendezvous about XTGeo by Jan Rivenaes from Equinor.
Link for the GitHub repo