Invoice Ninja

Invoice Ninja is an open-source invoicing and expense tracking application. It's primarily used by freelancers, small businesses, and entrepreneurs to manage their billing and get paid faster. The platform offers features like creating invoices, accepting payments, tracking expenses, and managing clients.

Official docs: https://invoiceninja.github.io/docs/

Invoice Ninja Overview

• Invoice
  • Invoice Item
• Client
• Payment
• Credit
• User
• Company
• Task
• Expense
• Project
• Vendor