If you had no money for marketing your Saas product, how would you get your first cusomer?

My main source has been from being open source, where other developers come in. That gets a few hundred visits a day without anything. But from a customer point of view, I'd say word of mouth. Speak to lots and lots of people in the area, on linked in, product hunt comments, and make discussions like this but about your topic. It might be a slow start though, so I'd be interested if others have better ways to get this traffic. Another option could be an affiliate partnership. Almost like: you advertise my site on your site, and I advertise your site on my site. But that might not gain much traffic either. Looking forward to see other comments! Keep up the posts Arjun :)