My most successful side-project so far is a small service for launching preview environment (https://codepreview.io https://codepreview.io). I have a couple of

My most successful side-project so far is a small service for launching preview environment (https://codepreview.io https://codepreview.io). I have a couple of customers involved, receiving great feedback so far, unfortunately, it doesn't generate enough revenue yet and it is progressing very slowly (chicken-egg problem). I believe we can scale the number of customers but it is hard to find the right balance between doing sales and feature improvements. For obvious reasons, I prioritize consulting hours that pay our bills.