from where we get the gimp software, feee of cost

Hello sratheesh-ga,

Thank-you for your question.

The Gimp can be downloaded for free from their main website at the
following location:

http://www.gimp.org/downloads/

Unless you wish to compile the software yourself (usually only done by
people wishing to tinker with the software) you will need to download
one of the binaries, which one you chose depends on which operating
system you use as it is available on Unix, MacOS X or Windows.

Should you require any further assistance on this subject please do
not hesitate to ask for assistance.