XORCA
XORCA brings XGCM and Xarray to the ORCA grid. (It actually brings all this to NEMO output. But xnemo was already taken.)
It allows for opening all output files from a model run into one Xarray dataset that is understood by XGCM. With this, grid-aware differentiation / differencing and integration / summation is possible.
https://github.com/willirath/xorca