Nektar (German for Nectar) is a 1970s English progressive rock band originally based in Germany.

Nektar++ is an open-source spectral/hp element framework designed to support the construction of efficient high-performance scalable solvers for a wide range of partial differential equations (PDE), including the compressible and incompressible Navier-Stokes equations, shallow water equations, reaction-diffusion-advection equations and the monodomain model and bidomain model of cardiac electrophysiology. The library supports both continuous and discontinuous Galerkin projections.