Wow, StackExchange have made their internal monitoring and alerting tool open-source and first impressions are that it's fantastic!
This looks amazing and I can't wait to try it out. I installed it on my Mac today in a Docker container and first impressions are that it's incredibly easy to set up and looks very powerful. I can't wait to try it out on our dev systems at work and see what we could do with it as we're currently moving lots of services into a cloud-based infrastructure at the moment and this could be a really effective tool. It's written in Go and it could be just the thing to let me get my feet wet with Go again after my initial toying with the language a couple of years ago.