But Would you guys say at first it is better to invest money in direct mail marketing or skip tracing software?

I am on an iPhone 6s running the latest iOS software.

Interests-I am a young entrepreneur, who enjoys wearing the hat of a software developer geek.

Hi I am looking for software that will give me for sale by owner leads.  

Can someone please tell me  where guys like Kent Clothier and Cameron Dunlap get their hands on vacant house software and turn around and sell it on a monthly subscription basis?

I'm looking for some suggestions for mortgage/loan portfolio tracking software or spreadsheet solutions.  

There are lots of programs and software out there that is geared towards property management from a "rental" standpoint, but really nothing in the way of tracking mortgages for those that aren't GIANT mortgage servicing companies. 

I've seen a lot information regarding REI Software.

So I'm going to be the technology consultant, im creating an automated system/software to do some tasks like finding cash buyers and etc.

need help, anyone have any experience with this software ?