I have two projects, combined doing ~€1500/mo

https://fider.io - an open source alternative to UserVoice. I started this one 6 years ago to learn Go and React. I’ve seen thousands of instances out there being self hosted, so I started a cloud hosting to those who don’t want to manage it themselves.

https://aptakube.com - Desktop Client for Kubernetes. This is very recent, launch was 2 weeks ago, so it’s only starting to get some traction now.

I’m leaving my job to go full time indie hacker now, wish me luck!