Best Landlord tools for applications, leases, background checks..

[Ryan Kawash]

Hey guys, so I just recently closed on my first duplex about a month ago, just finished renovating one of the units and i'm about ready to rent it out.  Posted a couple ads via FB and CL yesterday and i'm getting emails and messages already.  So I need to make an application, I will be requiring background checks, credit checks, proof of income and things of that nature.. the standard stuff.  I wanted to ask what's the best software available for these kinds of things, without paying any money or little money if i have to.  Also if there are any tools for collecting rent via an app or something that prevents me from having to go to my property to pick rent up.  Let me know, thanks!