Need software to improve my English pronunciation

Hi,
I know Call centers use such kind of softwares.
I want to use such software for myself. So is there any way i can get such software for me on the internet? freeware is preferable!

i have this software and it's name " Talk Any",you can search free software and download it.

You can have a look at this website.
accentschool.com

Hello

http://www.uiowa.edu/~acadtech/phonetics/

I normally take help from this site. Hope it helps you too.

And to add on to this ......according to your Process requirement, you can create a database of the words normally used on calls and make them practise.

English Word Builder 2.0 is a game for learning the English words and vocabulary through word-building from a collection of letters.

Well thanks a lot for replying me guys!
I appreciate your response! :)