We are using PM2 here at Hashnode. It's a very neat tool and comes with lots of utilities. For instance, if you want to take advantages of Node.js clusters, you can achieve that with no code changes. As @GarnierKristen said, monitoring and logging are also easy when you combine Keymetrics and PM2.

I suggest you to use this in some of your projects and see if it works for you.

I think it is the most complete process manager for Node, easy to install and run, and a big plus, you have logs and monitoring made easy with Keymetrics! :)

You should definitely take a look at it and play a bit in development, you will for sure fall in love with it!

I've used this on an 'enterprise' iOS App's backend (API side). We liked it because it is simple for the dev-Ops guys to quickly check the status of any service.