A curated list of companies using Erlang in production, organized by industry.

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EMQ is an open-source IoT data infrastructure software provider, delivering the world’s leading cloud-native MQTT-based IoT messaging platform and streaming database, providing a one-stop cloud-native solution for real-time IoT data connection, movement, processing and analytics, from edge to cloud to multicloud.

redBus is the world’s largest bus ticketing firm which has pioneered in solving for ground transport challenges across India as well as several International geographies since 2006. At the crux of our tech platform lies a micro services based architecture, where some of the key subsystems like the inventory management(including search) platform and the order management platform are powered by Erlang.

Quanterall is an R&D Lab for software and hardware engineering. The core business of the company is to develop custom Blockchain solutions, Enterprise software, and IoT infrastructure. Our projects are mainly based on Erlang, Elixir and Haskell.

Couchbase is a distributed NoSQL cloud database. It delivers unmatched versatility, performance, scalability across cloud, on-premises, hybrid, and edge computing deployments. We use Erlang to manage the couchbase cluster.

Evoneering uses Erlang and Elixir to power video load balancing services and media delivery, providing near instant access to live video content to clients around the globe. Also used for a variety of backend services for device management.


8x8 is a leading SaaS provider of video, voice, chat, contact center, and enterprise-class API solutions powered by one global cloud communications platform. We use Erlang to ensure the highest performance of instant messaging and event delivering to clients across the globe. In addition, distributed Erlang helps us design a scalable, reliable and fault tolerant system in a cost effective manner.

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.

We build engines for the core of communications service provider’s networks and key components of operational and business support systems.

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.

RocketJourney uses Erlang and Elixir to power up their backend platform to give users a tool for pursuing the habit of exercise with game mechanics, challenges, friendly peer-pressure and more.

Deleeng uses Erlang for data analysis with real time application updates, cache layers and delta updates handling big amount of data with very fast responses and great performance.

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.

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

GoDaddy powers the world’s largest cloud platform dedicated to small, independent ventures. With 18.8M+ customers worldwide and 78M+ domain names under management, GoDaddy is the place people come to name their idea, build a professional website, attract customers and manage their work.

Shared, VDS and dedicated hosting. Using Erlang for customer services API, most loaded part of hosting system.

Industrial IoT, Embedded Systems
Munich, Germany (HQ) but company is f...

Running Erlang on Real Bare Metal (we make www.grisp.org), small embedded systems with Erlang technology from hardware to cloud services

Erlang is a core of our payment platform serving millions of customers around the world.

Helium is shaping the future by rewarding anyone for creating a global decentralized wireless network for billions of machines.

We’re developing and maintaining the open source IoT/MQTT broker VerneMQ, the core for many IoT platforms and use cases.

We are changing how e-commerce is built using Erlang and Elixir. Whether you are a freelancer or a large enterprise team, you can build, test and scale your payments systems with confidence.

Customer Services
Östersund, Sweden

Loxysoft produces software and services for customer service and sales. Our backend for outbound dialing is built with Erlang since 2005.

We create a shopping list application called “Buy Me a Pie!” (iOS, Android). Erlang is used in the backend for the application.

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 (https://breethe.app) is backed by Elixir.

We are building the factory of the future! We use Erlang to deploy industry grade AI solutions.

We use Erlang to provide a decentralized data platform to our customers. We open-sourced Barrel (https://barrel-db.org), among many other Erlang libraries, which are a key part of our data platform.

We use Erlang to do scalable, real-time, intelligent systems. Erlang powers our products such as Bondy (open source networking platform for MicroServices and IoT, a WAMP Router and REST API GAteway), LSD (distributed, knowledge graph and deductive database) and Leapsight IoT Platform.

Software consultancy and development company, with experience in Erlang and Elixir.

Erlang powers Kivra’s backend services, handling secure digital mail for almost 3 million users in Sweden.

Berlin, Germany; Katowice, Poland

Erlang is used mostly in microservices that serve REST interfaces for clients and also in device protocol adapters (HTTP, CoAP, SNMP, etc.).

Data analysis, visualization and collaboration for individuals and teams. Our backend is built with Efene and Erlang.

Postmates is the largest, most reliable on-demand delivery and pickup platform. Erlang and Elixir are used for multiple core backend components.

An open-source, blockchain-based platform for scalable & user-friendly decentralized applications. Written in Erlang and Elixir.

Erlang powers the Alert Logic Security-as-a-Service solutions that secure the application and infrastructure stack of the cloud, processing millions of events per second from over 4,000 customers.

K2 uses erlang to guarantee high performance and availability in the fault-tolerant and scalable platforms and proxies build to address tele-communicating challenges.

Motorola Solutions uses Erlang and Elixir to develop components of mission critical communication systems that need to be reliable and fault-tolerant in the moment that matters.

Information Technology
Saint Petersburg, Russia

Erlang helps us to build services which solve sophisticated problems related to big data storage, search and data lifecycle management using native cloud architectures.

Erlang is used for high-volume message processing and event routing.

Erlang supports our communications platform based on websockets, webrtc & bert. Currently supporting hundreds of customers and millions of users.

Erlang powers the Kazoo platform which offers Class 4, Class 5 and CPaaS functionality on top of a geo-redundant system.

The backend of Cursor Insight’s electronic signature solution (which serves millions of banking customers) is written in Erlang and Julia.

Erlang is used across our business, including implementation of Automated Office. The AO client, server, registry and peer connectors are all implemented in Erlang, as is our code deployment infrastructure. We provide Erlang consulting and write game and chat backends in Erlang by contract.

Erlang powers our IRC bouncer software, websocket API, and our IRCv3 enhanced team IRC servers and Slack integration. We rely on Erlang’s power in concurrency, long running processes and message passing to provide an always connected, modern chat service.

We use Erlang to develop Dwango Media Cluster (DMC) which is a content delivery system such as VoD and live streaming. Erlang is one of the core technologies in our company.

Erlang is used to develop WebRTC SFU software package, Sora. Erlang makes real-time communications comfortable along with fun of development and ease of operations.

Erlang is used to capture, record and stream video at 10-20 Gbit/s: TV channels, IP cameras, webinars

Erlang is used to power our web based cobrowsing and chat solution. It allows us to keep our infrastructure performant, while still being simple and easy to maintain. This allows us to efficiently support our customers.

Erlang powers the core of Klarna’s system serving millions of customers in Europe.

How do you support 450 million users with only 32 engineers? For WhatsApp, the answer was Erlang.


Erlang is used in part to power Cloudant’s full-text search system.

Erlang is used for routing requests to containers and Elixir is used for some internal systems.

Erlang is used as part of the system Grindr uses to maintain a reliable, top performing and scalable stack for more than 3.2 Million daily active users.

Erlang is being used by Goldman Sachs in part of its HF trading platform. The Goldman Sachs platform is a very low latency (microseconds) event-driven market data processing, strategy, and order submission engine.

Montréal, Québec, Canada

IP video surveillance, access control, licence plate recognition, network security appliances

Ericsson uses Erlang to develop many of its products and an estimated 40 percent of all mobile traffic worldwide is carried over the company’s network solutions.

We provide document automation engine based on BPMN, build on top of Erlang\Elixir.

We provide reliable Erlang based BPM, ESB solutions used in telecomunications and utilities sectors.

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

Cisco ships 2 million devices per year which utlize the power of Erlang resulting in 90% of all internet traffic going through Erlang controlled nodes.

Bet365 uses Erlang and Elixir to service 20 million+ users and to meet the demands of 100,000s of concurrent users at peak times.

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.

AdRoll uses Erlang within the live monitoring of their real-time bidding system. This involves live monitoring everything that could go wrong on a system receiving 500K+ bid requests per second, with a substantial monetary value attached.

Erlang Companies