If you are looking at a property management platform,  there are several online that allow credit screening as well as payment portals. 

That being said you are welcome to use my public portal to look into the MLS for your area (NY agents have access to the whole state MLS).

If you would like to upload those into the portal I canreview them.

This is really different from other managers that tell the tenant to log into a portal... we pull the payment instead of waiting for them to push it! 

Everyone is familiar with Craigslist so there is no need for further discussion.Zillow Rental Manager allows you to post from a single portal and it posts to multiple sites: Trulia, Zillow, and Hot Pads (maybe others). 

There is one name on the rental portal for the lease, but neighbors say 2-4 people are living there.

To be more specific, when plans are submitted to the building dept. and they respond through the portal (I think it is called the projectdox) with problems, etc.,  I seem to remember that the homeowner can see the same information/questions as the architect as long as it gets set up that way.  

One word of caution - highly recommend checking out who is servicing the note currently - if it is owner servicing it the note is typically not as valuable.Some sites that do sell are fciexchange, paperstac, madison management, watermark exchange, loanmls to name a few of you looked at online portals

Then there's NakedApts, Zillow, Trulia, HotPads - you name it; all these portals charge money that you'll have to pay out of your pocket if you do it yourself.

Propertyware's Portals are very powerful.