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H2O

The H2O project

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  1. h2o h2o Public

    H2O - the optimized HTTP/1, HTTP/2, HTTP/3 server

    C 11.4k 878

  2. picohttpparser picohttpparser Public

    tiny HTTP parser written in C (used in HTTP::Parser::XS et al.)

    C 2.1k 275

  3. quicly quicly Public

    A modular QUIC stack designed primarily for H2O

    C 660 130

  4. picotls picotls Public

    TLS 1.3 implementation in C (master supports RFC8446 as well as draft-26, -27, -28)

    C 622 171

  5. qrintf qrintf Public

    sprintf accelerator for GCC and Clang

    C 403 19

  6. neverbleed neverbleed Public

    privilege separation engine for OpenSSL / LibreSSL

    C 206 41

Repositories

Showing 10 of 14 repositories
  • quicly Public

    A modular QUIC stack designed primarily for H2O

    h2o/quicly’s past year of commit activity
    C 660 MIT 130 74 30 Updated Apr 18, 2026
  • picotls Public

    TLS 1.3 implementation in C (master supports RFC8446 as well as draft-26, -27, -28)

    h2o/picotls’s past year of commit activity
    C 622 171 55 (1 issue needs help) 16 Updated Apr 18, 2026
  • h2o Public

    H2O - the optimized HTTP/1, HTTP/2, HTTP/3 server

    h2o/h2o’s past year of commit activity
    C 11,441 MIT 878 613 (6 issues need help) 118 Updated Apr 15, 2026
  • picohttpparser Public

    tiny HTTP parser written in C (used in HTTP::Parser::XS et al.)

    h2o/picohttpparser’s past year of commit activity
    C 2,056 275 16 6 Updated Apr 6, 2026
  • neverbleed Public

    privilege separation engine for OpenSSL / LibreSSL

    h2o/neverbleed’s past year of commit activity
    C 206 MIT 41 6 4 Updated Mar 6, 2026
  • yoml Public

    YAML Object Model Layer - a DOM-like interface for YAML

    h2o/yoml’s past year of commit activity
    C 43 7 1 0 Updated May 16, 2024
  • picotest Public

    Test::More for the C programming language

    h2o/picotest’s past year of commit activity
    C 37 13 1 0 Updated Mar 12, 2024
  • leaktrace Public

    experimental LD_PRELOAD library for tracking memory leaks

    h2o/leaktrace’s past year of commit activity
    C 38 4 0 0 Updated Dec 12, 2023
  • qrintf Public

    sprintf accelerator for GCC and Clang

    h2o/qrintf’s past year of commit activity
    C 403 19 4 3 Updated May 2, 2023
  • h2o-qns Public

    h2o/quicly Docker image for use with the QUIC network simulator

    h2o/h2o-qns’s past year of commit activity
    Shell 5 3 0 0 Updated Mar 11, 2020
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