Simd GitHub Repositories (2026) · Open Source Tools

A generic satellite data processing software.

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

Fast and exact implementation of the C++ from_chars functions for number types: 4x to 10x faster than strtod, part of GCC 12, MySQL, DuckDB, Chromium, Redis and WebKit/Safari

A modern C++17/C++20 glTF 2.0 library focused on speed, correctness, and usability

Fast, memory-safe Rust zstd codec with all-level decode, -7..4 encode, and dictionary training.

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

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

The fastest binary serializer for C#. Source-generated, zero-allocation, thread-safe and safe on untrusted input: .NET, Native AOT, Unity, Godot and HybridCLR, with Go, Rust and TypeScript writing and reading the same bytes.

JS to WASM compiler

A reading path for CPU performance engineering, from one instruction to production inference. Primary sources only, with a runnable benchmark for every section.

Pure-managed, SIMD-accelerated image codecs for .NET: JPEG, PNG, WebP, TIFF, GIF, JPEG 2000 and JBIG2, plus EXIF and ICC. No native dependencies, NativeAOT-compatible; the JPEG decoder beats libjpeg-turbo on our benchmark corpus.

Intel® Implicit SPMD Program Compiler

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

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.

Expressive Vector Engine - SIMD in C++ Goes Brrrr

Realtime Math

Rust's standard library vendor-specific APIs and run-time feature detection

The fastest Direct2D-powered image viewer for Windows. Features multi-threaded JXL/AVIF decoding, GPU acceleration, and a borderless geek UI. Supports WebP, RAW, & QOI with visual settings and auto-updates. Portable & SIMD-optimized.

A C++-based, cross platform ray tracing library

Unsafely fast hashing algorithm 📈