Open Source Erlang Software

Erlang is a programming language used to build massively scalable soft real-time systems with requirements on high availability. Some of its uses are in telecoms, banking, e-commerce, computer telephony and instant messaging. Erlang's runtime system has built-in support for concurrency, distribution and fault tolerance. OTP is set of Erlang libraries and design principles providing middle-ware to develop these systems. It includes its own distributed database, applications to interface towards other languages, debugging and release handling tools. Erlang/OTP is available as pre-built binary packages by most OS package managers. You can use Kerl, a script that lets you easily build Erlang with a few commands. We take security bugs in Erlang/OTP seriously. The Erlang distribution includes a step-by-step getting started guide.

EMQX is the world's most scalable and reliable MQTT Broker designed by EMQ. It supports 100M concurrent IoT device connections per cluster while maintaining extremely high throughput and sub-millisecond latency. EMQX boasts more than 20,000 global users from over 50 countries, connecting more than 100M IoT devices worldwide, and is trusted by over 300 customers in mission-critical IoT scenarios, including well-known brands like HPE, VMware, Verifone, SAIC Volkswagen and Ericsson. Flex to meet the demands of various industries towards digital transformation, including Connected Vehicles, Industrial IoT, Oil & Gas, Carrier, Finance, Smart Energy, and Smart Cities.

30-days-of-elixir is an educational repository created by Josh Adams (seven1m) designed to teach the fundamentals of the Elixir programming language through a structured, daily learning approach. The project provides a series of exercises and examples meant to guide learners from the basics of Elixir syntax to more advanced functional programming concepts. Each day introduces new material in a concise and practical format, encouraging hands-on experimentation and gradual mastery of the language. The content covers essential topics such as pattern matching, recursion, data structures, processes, and message passing—core principles that define Elixir’s design. This incremental learning format allows developers to build confidence and understanding while maintaining consistent progress. As one of the early and influential resources in the Elixir community, 30-days-of-elixir remains a valuable guide for self-learners and newcomers to the functional programming paradigm.

Vundle.vim is one of the original plugin managers for Vim, designed to make discovering, installing, and updating plugins as simple as editing your vimrc. It uses a declarative, Git-backed approach where each plugin is listed as a line, and Vundle takes care of cloning and wiring it in. The interactive interface supports searching for plugins from inside Vim, which lowers the barrier to exploring the ecosystem. Its core model emphasizes repeatability: your vimrc is the source of truth, making your setup easy to share across machines or teams. Vundle also provides commands to clean out unused plugins and to update all dependencies with a single keystroke. While newer managers exist, Vundle remains a straightforward, battle-tested choice that many guides and dotfiles still rely on.

This project has moved! Go to https://github.com/yenrab/qchybrid

MQTT client is designed for communication in Machine to Machine (M2M) and Internet of Things (IoT) contexts and implements MQTT protokol versions 3.1 and 3.1.1. The client is written in Erlang and tested with MQTT servers like Mosquitto and RabbitMQ.

CloudI is an open-source private cloud computing framework for efficient, secure, and internal data processing. CloudI provides scaling for previously unscalable source code with efficient fault-tolerant execution of ATS, C/C++, Erlang/Elixir, Go, Haskell, Java, JavaScript/node.js, OCaml, Perl, PHP, Python, Ruby, or Rust services. The bare essentials for efficient fault-tolerant processing on a cloud!

Erlang OPENGL/SDL api and utilities.

Yaws is a small fast and beautiful HTTP 1.1 webserver with excellent support for generating dynamic content. Yaws has been moved to github. http://github.com/klacke/yaws/

C, Python, Lua, and Erlang libraries for manipulating APEv2 tags.

Kent Erlang Robotic Library is a library allowing to communicate to Player/Stage robot simulator from Erlang.

ROSEN means RObotic Simulation Erlang eNgine; it is a software library, written in Erlang, which simulates 3D environments and in particular autonomous mobile robots, each with its behaviour and interaction capabilities.

Implementation of Aspect Oriented Programming (AOP) for Erlang. The AOP weaver is running against a target set of source files and controlled by aspect definitions. The weaver is implemented as a parse transformation function of Erlang compiler.

Engineered to scale and last, æternity is an easily accessible blockchain platform for the global public. With numerous innovative functionalities and performance far ahead of earlier blockchains, æternity allows its users and community to seamlessly venture into the new era of society, economy, and digital interactions. The æternity blockchain project was born out of a desire for a more fair Internet supported by scalable, open-source and cryptographic software, with a commitment to technical excellence. æternity blockchain itself launched as the public æternity mainnet in 2018. It is now a blossoming community of enthusiasts supported via the æternity crypto foundation. At its core, æternity is a blockchain protocol and a smart contract platform that goes beyond what traditional blockchains do. It is designed to be fault-tolerant and perfect for cases with billions of transactions in DEFI and more.

Anond is a ongoing experiment striving to provide transparent IP-level anonymization using virtual network interfaces, peer-to-peer and overlay network techniques. Anond is an implementation of an anonymous routing protocol with ideas taken from the paper "Anonymous overlay network supporting authenticated routing" by Roman Schlegel and Duncan S. Wong.

The Bluetail Ticket Tracker (BTT) is a system for creating, storing and keeping track of tickets. BTT can also store customer info and mail, as well as general information structures (e.g FAQ).

A Python implementation of Erlang concurrency primitives. Erlang is widely respected for its elegant built-in facilities for concurrent programming. This package attempts to emulate those facilities as closely as possible in Python.

The Ceylan library is a Free (LGPL/GPL) General-purpose Portable Open Source C++ Library, offering frameworks and abstractions of lower-level layers to ease software development.

Chicago Boss is a server framework inspired by Rails and written in Erlang. It offers all the conveniences of modern web development, including Comet. What sets Chicago Boss apart from other non-Erlang frameworks is that it can handle large amounts of traffic without any drop in performance. What sets Chicago Boss apart from other Erlang frameworks is that it is easy to set up and use. Build your next website with Erlang, the world’s most advanced networking platform. Do you pine for a simpler time when web pages loaded in under one second? Chicago Boss is the answer to slow server software: a Rails-like framework for Erlang that delivers web pages to your users as quickly and efficiently as possible. Chicago Boss is already being used in production on a number of internal as well as public-facing websites. If you like what you've read so far, you can download the latest code, browse the API documents, read the PDF tutorial, check out our wiki, or come and talk to us!

Cotton is an implementation of the Hessian data binding protocol for the Erlang programming language.

Distributed Erlang in Emacs Lisp. Consists of a library for Emacs/Erlang integration, and a suite of tools built atop it.

EPSI (Erlang Publish-Subscribe Infrastructure) is an Erlang implementation of a distributed infrastructure providing a content-based publish-subscribe service to its clients.

ERESYE means ERlang Expert SYstem Engine. It is a library to write expert systems and rule processing engines using the Erlang programming language. It allows to create multiple engines, each one with its own facts and rules to be processed.

ESense - Erlang "IntelliSense" for Emacs

Eddie acts as a high availability WAN and LAN clustering tool for web servers (including Apache). It provides load balancing at two levels (DNS and LAN), failover redundancy, and admission control to maintain quality of service levels.