Not bad. I see many people who mention a SaaS, books, a website, etc. and a lot of the time it doesn't look all that passive for the typically small amount of income it brings in. Nothing wrong with any of these things of course. They're just not really a passive income stream.

Of course, very few things are truly passive, especially things that have minimal risk to the original capital.

It was more work 5 years ago, doing 5-6-7k$

These days it is a few minutes a few times a week, doing support.

Very cool! How did you get started, knew there could be a market and finally reached your customers?

I needed it myself, and the other pieces of sw did not work proper, then spent 3 years of spending a few hours every evening promoting it, posting it to forums, etc. (And a little time prorgramming, but promoting it took waaay more time)