Chromium fork named after radioactive element No. 90. Source code and Linux releases. Windows/MacOS/ARM builds served in different repos, links are towards the top of the README.md.

Performance-portable, length-agnostic SIMD with runtime dispatch

Fast inference engine for Transformer models

C++ wrappers for SIMD intrinsics and parallelized, optimized mathematical functions (SSE, AVX, AVX512, NEON, SVE, WebAssembly, VSX, RISC-V))

C++ image processing and machine learning library with using of SIMD: SSE, AVX, AVX-512, AMX for x86/x64, NEON for ARM, HVX for Hexagon

Fast, modern C++ DSP framework, FFT, Sample Rate Conversion, FIR/IIR/Biquad Filters (SSE, AVX, AVX-512, ARM NEON, RISC-V RVV)

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

SIMD Vector Classes for C++

Expressive Vector Engine - SIMD in C++ Goes Brrrr

Math library using HLSL syntax with multiplatform SIMD support

std::experimental::simd for GCC [ISO/IEC TS 19570:2018]

FlyCV is a high-performance library for processing computer visual tasks.

Portable wrapper for SIMD and vector instructions written in C++11. Compatible with NEON, SSE, AVX, AVX-512 and SVE (length specific).

A modern C++17 glTF 2.0 library focused on speed, correctness, and usability

BitMagic Library

opencv

Single-header libraries from the Magnum engine

Computer vision library with focus on heterogeneous systems

A few classes for extremely fast json parsing/serializing in modern C++. Possibly the fastest json parser in C++. Possibly the fastest json serializer in C++.

UME::SIMD A library for explicit simd vectorization.