Asterisk Billing And Monitoring non web based

We want to build a custom software for managing and billing asterisk server. Please take a look at [[login to view URL]][1] and astercc.com. We would like to build same function software integrated together. In one sentence it should be call monitoring and billing software for asterisk server. Main functions of the software include : - Realtime call monitoring of extensions -Realtime Recording feature -Quick seach of users -Blind or attendant call transfer -Parking -Categorization -Integrated directory -CDR report -Invoice Functions All features from windows operator panel and aster cc. We would like to make a standalone application non web based.