Cowboy is a small, fast and modern HTTP server for Erlang/OTP.

Cowboy aims to provide a complete HTTP stack in a small code base. It is optimized for low latency and low memory usage, in part because it uses binary strings.

Cowboy provides routing capabilities, selectively dispatching requests to handlers written in Erlang.

Because it uses Ranch for managing connections, Cowboy can easily be embedded in any other application.

Cowboy is clean and well tested Erlang code.

• User guide

• Function reference

• While still online, run make docs

• User guide available in doc/ in PDF and HTML formats

• Function reference man pages available in doc/man3/ and doc/man7/

• Run make install-docs to install man pages on your system

• Full documentation in Asciidoc available in doc/src/

• Examples available in examples/

• Discord server

• Issues tracker

• Commercial Support

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