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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 11.2k 859

  2. picohttpparser picohttpparser Public

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

    C 2k 261

  3. quicly quicly Public

    A modular QUIC stack designed primarily for H2O

    C 640 125

  4. picotls picotls Public

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

    C 572 156

  5. qrintf qrintf Public

    sprintf accelerator for GCC and Clang

    C 399 19

  6. neverbleed neverbleed Public

    privilege separation engine for OpenSSL / LibreSSL

    C 199 40

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 640 MIT 125 71 27 Updated Jul 20, 2025
  • h2o Public

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

    h2o/h2o’s past year of commit activity
    C 11,157 MIT 859 594 (6 issues need help) 114 Updated Jul 17, 2025
  • 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 572 156 54 (1 issue needs help) 13 Updated Jul 16, 2025
  • picohttpparser Public

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

    h2o/picohttpparser’s past year of commit activity
    C 1,952 261 14 6 Updated Jul 12, 2025
  • neverbleed Public

    privilege separation engine for OpenSSL / LibreSSL

    h2o/neverbleed’s past year of commit activity
    C 199 MIT 40 6 4 Updated May 21, 2024
  • yoml Public

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

    h2o/yoml’s past year of commit activity
    C 42 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 0 0 Updated Mar 12, 2024
  • leaktrace Public

    experimental LD_PRELOAD library for tracking memory leaks

    h2o/leaktrace’s past year of commit activity
    C 36 3 0 0 Updated Dec 12, 2023
  • qrintf Public

    sprintf accelerator for GCC and Clang

    h2o/qrintf’s past year of commit activity
    C 399 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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