I'm a big fan of any piece of software that can give me a better understanding of game theory optimal play. Recently, I've been experimenting with a Russian developed, cloud-based program called Simple Postflop. The program can take the pre-flop ranges of any heads up confrontation and compute perfect GTO outcomes across all 1,755 possible flop types in about an hour. Here's an extremely informative tutorial from Alex "asuth" Sutherland. The most useful part of this software