I just want to know if free fonctionnal testing tools exist ??
What free fonctionnal testing tools is the best ??
here is a list off 88 free functional test tools: http://www.opensourcetesting.org/functional.php
which one is "best" is subjective. Have a look around the forums for some popular ones people are using.
Just search the forum for "recommend software" - this will give you hours of good reading material.
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There are many free tools available in market. it's depend on your requirement and technology which your company use to develop new product to find best one from all available tools