SORT Trading is a made up term which is supposed to mean the "Simultaneous Offsetting of Risk Technology" and is simply another name for what is most commonly known as Arbitrage Trading, sportsbook scalping, or Surebetting.
The term SORT Trading has never been used anywhere until these 4 companies came about with another individual "independent" review website which reviews the 4 companies in question. Outside of these 5 websites, there is no reference to SORT Trading anywhere, and the very technique that they are talking about is known by everyone else as Arbitrage trading.
If you are ever contacted by a company offering to sell you SORT Trading software (usually for many thousands of dollars/euros or pounds), then you are strongly recommended to investigate arbitrage trading - not SORT Trading.
For more information on the SORT Trading Scam read through this article:
S.O.R.T Trading - Simultaneous Offsetting of Risk Technology (SORT Trading)
and read through this thread on arbforum:
SORT Trading ***SCAM*** SORT Trading