11

I'm searching for real world applications of erlang, like projects already built with that language or pointers on how to search for such projects.

I'm looking for real projects not just test projects that won't do anything

25

It's used to write telephone switching systems, as it was invented at a phone company, Ericsson in Sweden.

20

Who uses Erlang for product development:

12

Have a look at CouchDB

12

The facebook chat system.

9

ejabberd, a Jabber/XMPP server, is built in Erlang

8
6

It's used to power part of GitHub (namely the Git daemon).

Details in an interview at InfoQ.

5

Incomplete list of websites powered by Erlang: http://www.appliedstacks.com/PoweredBy/Erlang

5

Amazon use it - for instance for SimpleDB. My firm hypernumbers.com (obviously).

5
4

Apache CouchDB http://couchdb.apache.org/

4

Wings 3D subdivision 3D modeller. This one is a bit different than the others listed here, because Erlang is usually used for high-availability concurrent server software, and in this case it's being used for a desktop 3D modelling application.

3

It is also used by RabbitMQ, which itself is used by a lot of companies.

1

tcpbalance is a load-balancing TCP proxy written in Erlang that works well with distcc.

distcc is a tool for speeding up compilation of source code by using distributed computing over a computer network. With the right configuration, distcc can dramatically reduce a project's compilation time.

1

in-text customization tool for websites hover.in is made using erlang & yaws.

1

Mochi web/ mochi media runs erlang

1

We built a betting exchange using Erlang, Couchdb, RabbitMQ and MochiWeb at Smarkets.

0

The NoSQL database Riak uses it, which in turn is used by a ton of companies and applications. They have a list of some places using it, but one example would be the Firefox bug reporting system logging directly to the Mozilla Riak servers.