I donβt know about any free tool, but you can start working with the trail-ware tool, it will make you go, and if that matters to you, you can specify it as a business example to make your manager cough out budget to buy it.
I once used this tool to demonstrate why multiple nested if-else is such a bad idea (it worked too ;-)) it will give you most of the functions you need for free for several days.
Alon
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