Use Optimizely CMP with Invoice Ninja

Welcome is the world’s leading marketing orchestration platform, purpose-built for marketers helping them with all aspects of planning, launching, and collaborating company-wide on global campaigns.

Invoice Ninja is a free, open-source solution for invoicing and billing customers. With Invoice Ninja, you can easily build and send beautiful invoices from any device that has access to the web. Your clients can print your invoices, download them as PDF files, and even pay you online from within the system.