I think the best way to get sellers is to work at it  yourself.

Save your money Sid, and get busy blogging, you will find that those leads you generate yourself will be much better than those anyone is selling.

I think you have the answer from the answers above or below mine!

Good morning Sid. My best lead generation tool is all the blogging that I do that brings a steady stream of prospective clients to my website.

 your best lead generation tool is you.

referrals, past clients, sphere of influence. Make your own leads. Too many times agents are looking for ways around hard work. You can use technology to manage your business but don't count on it to creat more quality leads than you can generate yourself

Sid,

This is the place where do it yourself is what it is all about...All that other stuff is just stuff to spend your hard earned $$$'s on.  A

Had to stop and read the answers you received. I'm actually so tired of paying $ and will give active rain, my sphere and Facebook posting a try for the first half of 2016.

Sphere of influence!

The BEST LEAD GENERATION software tools.

Sid, let me tell you without hesitation...THEY ALL WORK!!!!

Just not for everyone.

Why? 

If the TOOL is the same, the variable is the AGENT!

What will work best for YOU, requires more data. That data resides within your real estate business plan. The business plan compels you to define your business, what exactly your services include, who is the preferred customer, where they are located and how you will reach them.

Without creating this road map to your business, the default business model is the "Accidental Real Estate' plan.

For example, if you are working distressed real estate or the investor market, your tools will be Hubzoo, RealtyTrac, Auction.com, Craigslist, netloop and REI networks. Not one, but all of them.

Now, my direct response to your question is FACEBOOK. Trust me when I say, you need more information before stirring the FACEBOOK pot. It does not work for EVERYBODY.

Sid check out Trulia Seller leads if you are going to be a shark their data is decent.  I listed two last year from them and lost four.  I just get too many leads some stuff slips through the cracks.  One of those three did list with Mr. 1% after a failed listing appointment where I was going to stage it for him at a cost of $6,000 to me for a $1.3M, the proper way to market a home of that caiber.  The other three listed with  other agents.  What this tells me is those on Trulia looking for their "home value" are sellers you just HAVE to get to them.  I have another one I'm working on for $850k.  He claims he wants to be FSBO.  Immediately after I got off the phone with him I think I was on the way to go tanning, I switched gears and door dropped sothebys brokerage marketing magazines they are around $5 each and uber cool.  I also every two weeks have been emailing him.  This is getting long anyways the point is you have to stay on top of them like white on rice.  If an agent takes a lead with no CRM and is lazy that is why they say internet leads are a waste of money.  But if you create a system with a CRM and work hard they are a very viable business.  

I generate my own leads by marketing online and offline to secure new listing inventory....

That would be whatever software is loaded on my cell phone.

Copywriting, blogging. Free and it will get better results.

There is NONE, the best source of leads are the ones you generate yourself. Therefore you are not sharing them with multiple agents, they are not old and you not tire kickers

What Jeffrey Jones said

I am not aware of any tools.

Sid, my telephone is my friend when it comes to lead generation.