Originally Posted by WiredTree Zac

AWBS has a Plesk module. SW-Soft's products obviously support Plesk (PEM and HSPComplete). Rodopi has a Plesk module. WHMCS v3 which is in beta and looks to be released soon supports Plesk.

I've never used any of them, so I'm not sure if they all do exactly what you want, but that should give you some options to look into.