Poker software programs

Who uses them, and what advantages do they give.
Why are some banned and what extra advantages do they have.
Which ones would you recommend and why.

Poker programs give information about opponents, Informed means armed! If you know when and what your opponent is doing, wouldn't it be easier for you to win or save money? HM2 and Poker tracker 4 programs are among the most popular

Is it possible to perform analysis in these programs with benefit for the game?
It seems to me that analyzing for a very long time, and then also constantly looking at the results during the game, is generally not realistic.
Do these programs generally work for tournaments?