ZBillingNET is a comprehensive internet billing and payment solution for businesses. It enables businesses to accept payments online, process payments, create invoices, and manage customer accounts. It provides an intuitive user interface that simplifies the entire process from setup to payment. With ZBillingNET businesses can accept payments from major credit cards, PayPal, and other payment gateways. It also includes powerful reporting and analytics tools to help businesses track and monitor customer spending trends. Additionally, ZBillingNET supports multiple currencies and languages, making it a great choice for businesses with international customers.
Both are the billing solution for the lodging industry.
Discontinued. The project is still being developed as of 2018, but the last version, 4.20, dates back to September 2015. It can still be downloaded from the official website.
BILLmanager
WHMCS
HostBill
ClientExec
BoxBilling
WeFact Hosting
BillingServ
Zuora
Both are billing solutions for hosting providers.