What site do you play on?

Poker Tracker 4 or Holdem Manager 2 are a must have imo

Well, i was thinking to use them (softwares) on PS, i guess that if some softwares are compatible with only some sites it should be PS right? :)

And does any of these softwares can provide graphicon for profit/loss on PS?

Both can do way more than that. I personally use PT4, but I'm sure HEM is also good. Both have a 30 day trial, so try them out yourself.

http://www.pokertracker.com/

http://www.holdemmanager.com/

Equilab is another mandatory piece of software and it's free:

http://www.pokerstrategy.com/poker-tools/equilab-holdem/

I also use CREV and PokerRanger. Both can be very useful, but if you don't want to spend much money, then get only Equilab and PT4/HEM.

http://www.cardrunnersev.com/

http://www.pokerranger.net/

Thank you montana, for now i decided to try with PT4 and Equilab.

PT4 is really great software, it doesnt use much physical memory and its really helpful :)

PT4 or HEM2 are both good. I would say HEM2 is a little more user friendly, while PT4 has some really good advanced features.

For PokerStars a very nice program is StarsHelper:

http://starshelper.net/

Amongst other things this program helps with bet sizing(by position) and can convert all amounts to big blinds, so you don't need to know what stakes you're playing or what round you're in for a tournament. It also has some small convenient HUD options like pot odds, history or M for tourneys.

For post-game analysis I would also recommend FlopInspector*, which goes a bit further than Equilab:

http://flopinspector.com/

In my opinion this is one of the most important and neglected steps for a poker player to master. The software helps you find the best course of action preflop by analyzing all flops - so you know how to proceed on all flops. You've probably heard pros talking about how well a hand "plays", but rarely do you see an extensive analysis. Analyzing how well a hand flops against a villain range is easy using the Flop Inspector.

*I am the creator of this software