[wongarsu]

A classic example would be Erlang, which was developed at Ericsson for use in telephone exchanges.

[pohl]

Thank you for posting this. I was just about to post a question to which this is a good answer:

When was the last time someone invented a programming language in order to make a thing, and succeeded? Was it C/Unix?

[aidenn0]

The environment in which Erlang was developed was very different from the environment today. There were no third-party 4GLs available targeting the niche that Ericsson wanted, and there are good reasons to not want to use C in a telephone exchange.

[tormeh]

They tried using C++, I think.