Indiehackers.com has stripe-verified revenue for many small saas so check that out to see what makes money. General trend is other than the AI assistant bubble, the money is in marketing automation. The bar is high for dev tools. You compete with Jetbrains for quality and a lot of free stuff for price. Unless you are very niche. E.g. I think something like a tool that solves kubernetes soc2 compliance sort of thing.