@Benjamin Schlais you can general market and advertise on any and all platforms, it would would simply be up to you to direct your applicants or leads to the system they will use once approved. 

@Elton John - I'd go to Star Hardware in Hartford and ask them who buys a lot of windows from them and see if they can give you a phone number.  

It's what I use for my rental portfolio, and they've got a great platform / app that allows you to see everything.

Several times a year I am am sending out a text message to all tenants (freeze warnings, inspection reminder, etc) I am looking for an online platform that has a good app as well as a website that I can use to do those tasks.

In other words, where is the work happening most often (e.g., property-management systems, lead platforms, CRMs)?

Any other platforms that are recommended.

What are you guys's thoughts about a web 3 decentralized real estate investing platform , designed for peer to peer lending that uses smart contracts to facilitate all transactions between investors and lenders ?

We have it listed on all the major listing platforms.

What is the best platform to sell tenanted house?

The use of Zillow or Redfin for example are online platforms that are supposed to be easy to find a home and scroll through homes while on your phone at night or on the weekends.