avx2

Parsing gigabytes of JSON per second : used by Facebook/Meta Velox, the Node.js runtime, ClickHouse, WatermelonDB, Apache Doris, Milvus, StarRocks

A 2.78-trillion-parameter Kimi K3 running inference on a single CPU in 8.24 GB of RAM. Portable C99: no BLAS, no framework, no GPU.

Fast inference engine for Transformer models

Performance-portable, length-agnostic SIMD with runtime dispatch

Roaring bitmaps in C (and C++), with SIMD (AVX2, AVX-512 and NEON) optimizations: used by Apache Doris, ClickHouse, Alibaba Tair, Redpanda, YDB and StarRocks

Implementations of SIMD instruction sets for systems which don't natively support them.

DirectXMath is an all inline SIMD C++ linear algebra library for use in games and graphics apps

SIMD Library for Evaluating Elementary Functions, vectorized libm and DFT

SIMD Vector Classes for C++

Unicode routines (UTF8, UTF16, UTF32) and Base64: billions of characters per second using SSE2, AVX2, NEON, AVX-512, RISC-V Vector Extension, LoongArch64, POWER. Part of Node.js, WebKit/Safari, Ladybird, Chromium, Cloudflare Workers, Ghostty and Bun.

Portable header-only C++ low level SIMD library

Fastest Integer Compression

Performance-optimized wheels for TensorFlow (SSE, AVX, FMA, XLA, MPI)

Visual Studio extension for assembly syntax highlighting and code completion in assembly files and the disassembly window

C++ SIMD Noise Library

Native Go version of HighwayHash with optimized assembly implementations on Intel and ARM. Able to process over 10 GB/sec on a single core on Intel CPUs - https://en.wikipedia.org/wiki/HighwayHash

Expressive Vector Engine - SIMD in C++ Goes Brrrr

C++ template library for high performance SIMD based sorting algorithms

Delphi Web Script general purpose scripting engine

⚡️⚡️⚡️Blazing fast correlation functions on the CPU.