Keywords: Assembly & Compiling, Libraries & Frameworks & Tools Collections

AVX Series

Fundamental C++ SIMD types for Intel CPUs (sse, avx, avx2, avx512)
https://github.com/ospray/tsimd

Optimized CppSPMD test project: macro control flow, SSE4.1/AVX1/AVX2/AVX2 FMA support
https://github.com/richgel999/CppSPMD_Fast

SSE Series

Implementations of SIMD instruction sets for systems which don’t natively support them.
https://github.com/nemequ/simde

LZ77/LZSS designed for SSE based decompression
https://github.com/ConorStokes/LZSSE

The FastPFOR C++ library: Fast integer compression
https://github.com/lemire/FastPFor

ISPC Series

ispc is a compiler for a variant of the C programming language, with extensions for single program, multiple data programming. Under the SPMD model, the programmer writes a program that generally appears to be a regular serial program, though the execution model is actually that a number of program instances execute in parallel on the hardware.
https://github.com/ispc/ispc/

Neon Intrinsics (Arm/Aarch64) Series

A translator from Intel SSE intrinsics to Arm/Aarch64 NEON implementation.
https://github.com/DLTcollab/sse2neon

Comprehensive Frameworks

MIPP is a portable wrapper for SIMD instructions written in C++11. It supports NEON, SSE, AVX and AVX-512.
https://github.com/aff3ct/MIPP

Channel Coding

A fast simulator and a library dedicated to the channel coding.
https://github.com/aff3ct/aff3ct

Binary Diff

a C\C++ library and command-line tools for Diff & Patch between binary files or directories(folder); cross-platform; fast and create small delta/differential; support large files and limit memory requires when diff & patch.
https://github.com/sisong/HDiffPatch

a C++ library and command-line tools for Zip(Jar,Apk) file Diff & Patch; create minimal delta/differential; support Jar sign(apk v1 sign) & apk v2,v3 sign .
https://github.com/sisong/ApkDiffPatch

Most men die at twenty or thirty; thereafter they are only reflections of themselves: for the rest of their lives they are aping themselves, repeating from day to day more and more mechanically and affectedly what they said and did and thought and loved when they were alive. ― Romain Rolland