Here is a simple collection of links where you can submit a free website listing.
There are a number of questionable and rather expensive business listing services, such as Yext and other so called Power Listing services. The truth is, many believe you’re better off to allow local search directories to populate over time. There is also not really a whole lot of evidence that listings in local search directories will help with your overall SEO rankings. However, it is important to try and be sure that wherever you are found, the information that is provided is accurate.
If you’d rather do some of the footwork yourself, here a few places to start. You can submit your website to these online listing services for free!
Let me know if you have more to add to the list!