PUBLIC MARKS with tags Erlang & "open source"

Available in Ruby, JavaScript, Python, Erlang, PHP, Perl, Objective-C, Java, .NET, Android, C++, Go, Lua, ooc, ActionScript, ColdFusion, Scala, Clojure, Fantom, CoffeeScript, D, and for node.js. Works great with TextMate, Vim, Emacs, and Coda.

Erjang is a virtual machine for Erlang, which runs on Java

Osmos provides on-disk ordered key-value tables for Erlang, based on a sort-merge machine with user-defined merging semantics. This allows a very high volume of updates to be handled efficiently while still supporting a variety of useful operations with transactional safety, e.g., adding to a counter, taking the union of sets, or simply replacing a record. Osmos is ideal for situations where updates are much more frequent than queries, for example, collecting statistics for reporting, and periodically generating reports.

flatula is a simple "write-once" database for Erlang that provides an easy way to remember a piece of data, then look it up later using a compact identifier. See FlatulaHowTo for a brief introduction and tutorial.

MochiWeb is an Erlang library for building lightweight HTTP servers.

plists is a drop-in replacement for the Erlang module lists, making most list operations parallel. It can operate on each element in parallel, for IO-bound operations, on sublists in parallel, for taking advantage of multi-core machines with CPU-bound operations, and across erlang nodes, for parallizing inside a cluster. It handles errors and node failures. It can be configured, tuned, and tweaked to get optimal performance while minimizing overhead.

Tsung is an open-source multi-protocol distributed load testing tool

Erlaws is a collection of client implementations of Amazon's WebServices offerings. Currently there are clients for S3, SQS and SDB.

Erlectricity exposes Ruby to Erlang and vice versa. It provides a messaging API similar to Erlang's for writing your ruby scripts that interact with erlang

sgte is an Erlang template Engine for generating structured output (code, html web pages, xml, emails, csv files, etc...).

ErlMail is a complete email solution written in Erlang. It contains (or will contain) full RFC compliant SMTP, IMAP and POP clients and servers written in a modular fashion to allow others to use the modules in their own projects.

The aim of this project is to create a development environment for Extreme Programming in Erlang.

EUnit - a Lightweight Unit Testing Framework for Erlang