Erlang HTTP

Open-source Erlang projects categorized as HTTP
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Erlang HTTP2 REST WebSocket webtransport
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Top 8 Erlang HTTP Projects

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HTTP

  1. cowboy

    Small, fast, modern HTTP server for Erlang/OTP.

    Project mention: Standalone HTTP Server in Elixir with Bandit | dev.to | 2026-06-03

    bandit has been created as an alternative to cowboy, fully coded in Elixir and designed to be integrated and highly compatible with the Phoenix framework. When it came out few years ago, the community did a lot of noise and I never find a moment to test it. bandit  supports HTTP/1.1 and HTTP/2 natively. WebSockets protocols support can be added with the help of WebSock and WebSockAdapter modules. At this time, it does not support HTTP/3 (yet?).

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  3. CouchDB

    Seamless multi-primary syncing database with an intuitive HTTP/JSON API, designed for reliability

    Project mention: Filter CouchDB query results with arbitrary JavaScript - like SQL WHERE... | dev.to | 2026-01-04

    CouchDB has a "List function" feature which allows you to transform query results.

  4. hackney

    simple HTTP client in Erlang

  5. gun

    HTTP/1.1, HTTP/2, Websocket client (and more) for Erlang/OTP. (by ninenines)

  6. cowlib

    Support library for manipulating Web protocols.

  7. katt

    KATT (Klarna API Testing Tool) is an HTTP-based API testing tool for Erlang.

  8. rest

    ☕ REST: RFC-2616 Framework (by synrc)

  9. lhttpc

    What used to be here -- this is a backwards-compat user and repo m(

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).

Erlang HTTP discussion

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Erlang HTTP related posts

  • HTTP/3 and QUIC in Erlang with Cowboy

    4 projects | dev.to | 1 Jun 2026

  • HTTP Server in Erlang with Cowboy

    2 projects | dev.to | 29 May 2026

  • Filter CouchDB query results with arbitrary JavaScript - like SQL WHERE...

    1 project | dev.to | 4 Jan 2026

  • Fsync() after open() is an elaborate no-op

    1 project | news.ycombinator.com | 14 Mar 2025

  • Building HTTP/JSON API In Gleam: Introduction

    3 projects | dev.to | 18 Dec 2024

  • Developers Now Required to Share Phone Number and Address on EU App Store

    1 project | news.ycombinator.com | 19 Oct 2024

  • Why Sync Engines Might Be the Future of Web Applications

    1 project | dev.to | 17 Sep 2024
  • A note from our sponsor - SaaSHub
    www.saashub.com | 17 Aug 2026
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Index

What are some of the best open-source HTTP projects in Erlang? This list will help you:

# Project Stars
1 cowboy 7,524
2 CouchDB 6,937
3 hackney 1,416
4 gun 947
5 cowlib 295
6 katt 124
7 rest 84
8 lhttpc 1

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