Nektar++ is an open-source spectral/hp element software which solves a wide-range of partial differential equations (PDE), including compressible and incompressible flow problems, advection-diffusion-reaction equations and cardiac electrophysiology.Nektar++ is written in C++ and extensively exploits object-oriented programming (OOP). The software is being actively developed by Sherwin's group at Imperial College London (UK) and Kirby's group at Utah university (US).