From where can I download hap software for free? Please provide me a link.

Go to Career official website and browse under downloads. There you should be able to get a free trial version of HAP software valid for 30 days.

how to install hap program for free, can someone send the link..

you can make search for 4.8 v or previous revisions only you may found it as a torrent file or on sharing sites.

for 4.9 v you have to contact Carrier branch in your country to get the product key 

any way contact with me on mail i can send you the program en_sherif_m at yahoo