Billing Systems for ISPConfig
I am interested in this topic as our company is an avid user of WHMCS and Plesk and we are thinking of migrating from Plesk to ISPConfig. I have the following questions:
* Which billing systems does ISPConfig support?
* Does ISPConfig have an 'overuse' API to obtain overuse values for billing purposes?
* Are there migration systems available for people who want to go from Plesk to IPConfig?