How to sell a SaaS with no customers

I had custom software built to manage what I do for my niche business. There isn’t any software on the market for what I do, that’s why I had to build it. Most people like me use Google Docs, but that isn’t ideal for efficiency and organization, especially as you grow.Now that it is built and I can use it as intended, I wonder if anyone else who knows SaaS might want it to explore making it a SaaS? As long as I can still use it of course. :-)When building it, I did think ahead and added the ability for others to sign up and use it, just in case. So that function is there. But I have done no marketing what so ever, so no one but me uses it. Again, I only built it because my business needed it.So my question, is there any value in a SaaS that doesn’t currently make any money, considering the above? If even a little value, which is the best platform to try to sell it considering it makes no money? I don't expect much for it. I do have a list of over 400 of my competitors in my field. I’m wondering if I should reach out to them to see if they want to buy it? I would rather not as that would take time, and that is in short supply these days for me. But if that is best, then I guess I have too. Or would just listing it on a service and hoping for the best be a reasonable strategy?What should I do? see hubwealthy.com/wealthy