Is there any opensource classified website.I am searching it on google from morning but i did not get success.

Google 'classified script free'..... pages of them.

it is showing error of mysqli.i am using can i install with mysqli.

the error is
Warning: mysqli::close() [mysqli.close]: Couldn't fetch mysqli in /opt/lampp/htdocs/osclass/oc-includes/osclass/classes/database/DBConnectionClass.php on line 530

@daniel36, seems like you have to enable mysqli in php.ini in your lampp, if not upgrade your lampp to a newer version with php v5.3