Popular Online Rental Property Market Tools

[Julian Pilate-Hutcherson]

What are some of the most helpful and informative websites/online tools that you (rental property owners) like to use when conducting research in a new market outside of Zillow, Redfin, etc.? I'm specifically looking for websites that allow the user to search to display crime heat maps, the percentage of renters vs. owners, top schools within a neighborhood, and other helpful information.