BigDFT is a density functional theory (DFT) massively parallel electronic structure code using a wavelet basis set with the capability to use a linear scaling method. Wavelets form a real-space basis set distributed on an adaptive mesh (two levels of resolution in our implementation). Goedecker-Teter-Hutter (GTH) or Hartwigsen-Goedecker-Hutter (HGH) pseudopotentials are used to remove the core electrons.
BigDFT is available in ABINIT v5.5 and higher but can also be downloaded in a standalone version from the website. The Poisson solver based on a Green function formalism, periodic systems, surfaces, and isolated systems can be simulated with explicit boundary conditions.
The Poisson solver can also be downloaded and used independently and is integrated in ABINIT, Octopus, and CP2K. The code, tutorials, and documentation are available on BigDFT.