HPDDM : high-performance unified framework for domain decomposition methods
https://github.com/hpddm/hpddm

Team : PEQUAN

HPDDM is a collection of preconditioners based on domain decomposition, either overlapping or non-overlapping. They can be used to solve large linear systems, as typically encountered when discretizing partial differential equations. These preconditioners can be used in conjunction with various Krylov methods. The library is usable in C, C++, Python, or Fortran codes.

Software leader : Pierre JOLIVET
https://github.com/hpddm/hpddm