Syncing Invoice Ninja and WHMCS is currently on our roadmap
Invoice Ninja is a free, open-source solution for invoicing & billing customers. With Invoice Ninja, users can easily create and send professional invoices from any internet-enabled device. Clients can print invoices or download them as pdf files as well as pay online from within the system.
WHMCS is the leading web hosting management and billing software that automates all aspects of your business from billing, provisioning, domain reselling, support, and more. WHMCS easily integrates with all the leading control panels, payment processors, domain registrars and cloud service providers.
PieSync is easy to use and helps you build your business by increasing productivity. Our two-way contact integration will decrease data errors and ensure that you and your team will have access to the most up to date customer information.