SystemFreaks Well there isn't any accountancy modules, I've seen people discuss trying to get a module created for Xero etc... on the community forums. I use Zoho Books, I've seen one company 'like' zappier that offered a sync, but I'd likely try making something simple... I'd just want to track invoices generated and mark them in Zoho, such that I could easily complete accounting.
Right now for each invoice generated and settled via Blesta, I'd need to work out how to settle that in my book keeping.
Beyond this, maybe a link for some other VPS/Dedi providers or something like openstack. I've seen there is a Proxmox module.
I'll make a thread soon just for Blesta discussion, I don't want to derail this thread off-topic. Thanks for asking though.