etap is a simple erlang testing library that provides TAP compliant output.

Distributed systems infrastructure used by Riak.

Console Erlang DeBugger

Erlang build tool that makes it easy to compile and test Erlang applications and releases.

Draws simple SVG sequence diagrams from textual representation of the diagram

Simple and elegant component-based UI library

Compose web applications with functions

Yaws webserver

Peace of mind from prototype to production

Elixir is a dynamic, functional language for building scalable and maintainable applications

Erlang/OTP

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