If your looking for a lead website for off market cash purchases, Brandon does a real basic tutorial on how to make one your self with a free website platform (can't find the link, sorry)Otherwise one of the members here runs a site called Lead Propeller.  

Certain types of funds or platforms that I am unaware of?  

You might be a lender, an agent, a wholesaler, a contractor, or anyone else providing a service to real estate investors.You might have noticed, BiggerPockets is not a fan of salesy forum posts.Or private messages.Or anything else of that nature.Instead, our platform is built on providing REAL Value to investors - we want expert opinions on our forums, on our blog, and in our community.The good news here is that IF you can provide value, and do it the right way, and IF you can intelligently adapt your use of BiggerPockets to helping those who might be potential clients, you can do REALLY BIG business on our platform.And I've spent two years studying how it's done.If you would like to hear from me, and study successful sales professionals on BiggerPockets, I'd love if you would join me for a webinar coming up later today at 2:00 PM Mountain Time:"How to Use BiggerPockets to Do More Business and Build Your Brand"https://attendee.gotowebinar.com/register/8202868388585348609We'll talk about how to target discussions that are relevant to your business, how to find clients that need your assistance, how to appropriately go about building your network, and how to scale to do BIG business down the line.I hope you can join me!

There are basically a handful of companies & brokers who provide good quality non performing notes and you need to build a contact list with these folks.I've built a strategy and platform for evaluating, buying, due diligence, and various exit strategies for NPLs.

Over time the platforms with the best dealmakers and the best deals will win out IMO.  

Wix has a great platform if you want to design it yourself.  

Hi BP,I've posted on here a few times and have gotten excellent advice from tons of wise people and have returned for just that again.I'm a new REI and over the past several weeks have been meeting people in person and getting their advice, but I come to the BP platform for more information.I've gone through the pre-approval process and have been saving money to purchase my first (of many) multi-families.

But I want to assure you that we give everyone equal access to deals on the platform.

Once you are logged in, tap Menu on top and it will show a box for Search platform

RentecDirect.comwas a cheap ($15/mo) and bare bones platform where I could track expenses, log rents, screen tenants, post vacancies and upload all my documents.