SolidInvoice
CRM & Business AppsSelf-hosted invoicing and quoting for small business
Replaces FreshBooks, Invoice Ninja
Invoice Ninja is a popular proprietary tool in the crm & business apps space. These open-source apps let you replace Invoice Ninja with software you host and control yourself.
Moving off Invoice Ninja means trading a managed subscription for a service you run yourself. The payoff is ownership: no per-seat pricing, no vendor lock-in, and full control of your data. Start with the option above that matches your setup-difficulty comfort level — every app links to a detailed specs page and head-to-head comparisons.