C++ Avx2

Open-source C++ projects categorized as Avx2
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Top 17 C++ Avx2 Projects

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  1. simdjson

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

    Project mention: Simdjson: Parsing gigabytes of JSON per second | news.ycombinator.com | 2026-06-16

  2. SaaSHub

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  3. highway

    Performance-portable, length-agnostic SIMD with runtime dispatch

    Project mention: We recommend Highway over std:SIMD | news.ycombinator.com | 2026-06-12

  4. CTranslate2

    Fast inference engine for Transformer models

    Project mention: Adding 70-language translation to an image API without paying per word | dev.to | 2026-06-09

    Runtime: CTranslate2 with int8 quantization. This is the key piece. It shrinks the model to ~1.3 GB and runs CPU inference fast. Do not run raw transformers on CPU for this.

  5. simdutf

    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.

    Project mention: How fast can browsers process base64 data? | news.ycombinator.com | 2025-12-05

  6. DirectXMath

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

  7. Vc

    SIMD Vector Classes for C++

    Project mention: Vc: SIMD Vector Classes for C++ | news.ycombinator.com | 2026-05-28

  8. eve

    Expressive Vector Engine - SIMD in C++ Goes Brrrr (by jfalcou)

    Project mention: Eve: Expressive Vector Engine – SIMD in C++ Goes Brrrr | news.ycombinator.com | 2026-04-09

  9. libsimdpp

    Portable header-only C++ low level SIMD library

  10. x86-simd-sort

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

  11. toys

    Storage for my snippets, toy programs, etc.

  12. sse-popcount

    SIMD (SSE) population count --- http://0x80.pl/articles/sse-popcount.html

    Project mention: SIMD Population Count | news.ycombinator.com | 2026-04-16

  13. CPURasterizer

    CPU Based Rasterizer Engine

  14. Jsonifier

    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++. (by RealTimeChris)

  15. std_find_simd

    std::find simd version

  16. modernRX

    Modern C++ RandomX Implementation

  17. avil

    Audio upscaling detector and command line spectrum visualisation tool

    Project mention: I built a CLI tool to detect fake high-res audio and visualize audio spectrum | news.ycombinator.com | 2026-03-01

  18. YAMI

    Yet Another Machine Inference framework (by nirw4nna)

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).

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Index

What are some of the best open-source Avx2 projects in C++? This list will help you:

# Project Stars
1 simdjson 23,952
2 highway 5,687
3 CTranslate2 4,573
4 simdutf 1,857
5 DirectXMath 1,784
6 Vc 1,539
7 eve 1,354
8 libsimdpp 1,300
9 x86-simd-sort 1,018
10 toys 375
11 sse-popcount 357
12 CPURasterizer 200
13 Jsonifier 102
14 std_find_simd 21
15 modernRX 17
16 avil 12
17 YAMI 2

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