Altenwald is a company with wide experience helping others companies to grow with their technology stack and supporting and giving training for solutions based on Erlang and Elixir.

We build trusted, fault-tolerant systems that can scale to billions of users. Our Erlang & Elixir expertise is the backbone of our clients’ operations.

Erlang, Java & AWS. We can help you with developing the product, setting up infrastructure that is going to survive millions of concurrent users, perform full scale load tests to prove it and hook up business metrics, so that you can see it with your own eyes. Our main areas of expertise are Ad Tech, Instant Messaging, Public Transport & IoT.

We build ambitious web and mobile solutions for clients across the world, mostly with Elixir/Phoenix and Ember.js. Our open source air-quality PWA Breethe ( is backed by Elixir.

As lead developer of the Erlang based open source content management system Zotonic, WhatWebWhat is the web- and Erlang consultancy company of Marc Worrell.

Amsterdam, Netherlands

Maximonster uses Erlang and the Zotonic CMS for LearningStone and other platforms. LearningStone is a cloud based learning & collaboration platform for professional training and coaches.

Oxford, UK (HQ) but company is distri...

Old Reliable is a team of problem solvers and software engineers. We use Erlang and Elixir to help our clients make rapid progress on their technical projects.

We are software cooperative focused on helping companies solve their problems around real-time, high concurrency web systems and IoT infrastructures. We use Erlang/OTP and Elixir as the choice technology for most of our development. We are also contributors to the VerneMQ message broker and offer plugin development and support for that platform.

Erlang Companies