The MediaCP module allows you to add and manage MediaCP servers in WHMCS.
The Plesk module allows you to add and manage Plesk servers in WHMCS.
The Reseller Central module allows you to add and manage Reseller Central servers in WHMCS.
ResellerClub offers thawte's Digital Certificates.
The SCPanel module allows you to add and manage SCPanel servers in WHMCS.
SolusVM is a virtual server control panel from SolusLabs, Ltd.
The TCAdmin module allows you to add and manage TCAdmin servers in WHMCS.