We run it for mixcloud.com its awesome, saved us hundreds of hours of dev time easily.

We use it/love it at Uber. Had a problem has been with the results building up in RabbitMQ and causing the queue to exceed it's memory allocation. We disabled results, and fortunately that's now the default with this release.

Awesome tool!

We are running some massively distributed tasks with it.

We use it for historious, it has never had any problems. I would definitely, definitely recommend it.

We use it in production and have for a couple of years. It's never once caused an issue.