InvoiceNinja InvoiceNinja is an alternative to Zoho, Wave, FreshBooks and other invoicing software with a permissive license. It is a feature-reach open source software which helps you get paid easier. Through its very user-friendly interface, InvoiceNinja makes things easier, and provides a variety of apps through which you can accomplish different tasks: invoice clients, collect payments, create proposals, expenses, time tasks, and more!. It is the ideal platform featuring the tools you need to facilitate your freelance or SME business & get paid. Note: at Cloud68.co we do NOT develop this software and all the names and trademarks of the software are owned by the entity behind the project. Software update frequency For information about the way we handle software updates, please visit https://docs.cloud68.co/books/faqs-tech-support/page/scheduled-maintenance-software-updates .