The Getfem project focuses on the development of a generic and efficient library for finite element methods. The library can be used from C++, Python, and Matlab. The library includes numerous Finite Elements and associated tools such as assembly procedures for classical problems, interpolation methods, computation of norms, mesh operations (including automatic refinement), boundary conditions, post-processing, and more. Numerous examples are provided.
PFFFT is a very small 1D Fast Fourier Transform library based on the venerable FFTPACK v4. It handles single precision real and complex transforms. Computations take advantage of SSE1 instructions on x86, Altivec on PowerPC, and NEON on ARM, allowing it to achieve a performance level that is not too far from the very best FFTs (FFTW, Intel MKL, Apple vDSP).