This is an web application that could reconstruct the fermi surface and some related physical properties from ab initio calculation, such as VASP (Vienna ab-initio simulation packages), quantum espresso.
The reconstruction process use Wannier function to interpolate the fermi surface and wavefunctions. Formalism from this paper:
Yates, J. R., Wang, X., Vanderbilt, D., & Souza, I. (2007). Spectral and Fermi surface properties from Wannier interpolation. Physical Review B - Condensed Matter and Materials Physics, 75(19), 1–12. https://doi.org/10.1103/PhysRevB.75.195121
The visualization and interaction are achieved by using DASH.
Currently in its early stage.