Invoice Ninja is an open-source invoicing platform — capable, but it still needs a server (cloud or self-hosted) and an account. InvoicePro is simpler: one HTML file, runs in your browser, makes invoices and quotes offline with nothing uploaded.
Invoice Ninja is a well-respected open-source invoicing solution. You can use the hosted cloud version (account required) or self-host it (server required). Either way, there is infrastructure to run and data stored somewhere.
InvoicePro is the minimal alternative: a single HTML file with no server at all. Open it in any browser and you have invoicing — logo, tax, discounts, 12 currencies and four layouts — stored entirely in your browser's local storage. Pay $9 once for Pro. There is nothing to host, maintain or log in to.
| Invoice Ninja | InvoicePro | |
|---|---|---|
| Deployment | Cloud (account) or self-hosted (server) | Single file, runs in any browser |
| Account required | Yes | No account, ever |
| Server required | Yes (their cloud or yours) | No |
| Works fully offline | No | Yes, zero network requests |
| Invoices & quotes | Yes | Yes |
| Logo, tax, discounts | Yes | Yes |
| Multi-currency | Yes | 12 currencies |
| Best for | Full invoicing + client portal | Fast, private, serverless invoicing |
Invoice Ninja is open-source; plans and self-hosting requirements change over time — check their site. InvoicePro is invoicing only, not a full billing platform.
Just a file — no infrastructure, no maintenance, no hosting costs.
Open the file and invoice — no sign-up or login at any point.
Works with the Wi-Fi off, on a plane, anywhere.
Switch modes, add a PAID stamp, print a crisp PDF.
Logo, accent colour and four layouts.
Client names and amounts never leave your computer.
If you need a full invoicing platform with client portals, recurring invoices, multiple users, expense tracking and payment gateways — and you are comfortable managing a server or using their cloud — Invoice Ninja is a strong, free, open-source solution. InvoicePro is for freelancers who want the simplest possible invoicing with no infrastructure.
Nothing to set up — open the generator and create your next invoice. Get the single tool for $9, or all five in the $39 Freelance Tools Suite.
Part of a set of five offline, no-subscription tools that share a CSV format:
No account, no hosting, works offline. Free to start.