Open Source Alternative to:

Invoice Ninja is a free invoicing platform designed for freelancers, consultants, and small business owners who need to get paid faster without expensive software. Whether you're a solo entrepreneur or managing a growing team, this tool handles the administrative work so you can focus on your business.
The platform offers comprehensive invoicing features including customizable invoice templates, automated payment reminders, and client portals where customers can view invoices and payment history. You can accept payments through multiple gateways like Stripe, PayPal, and Checkout.com, allowing clients to pay with just one click.
Key capabilities include:
The free plan supports up to 5 clients with unlimited invoicing, custom branding, and online payment acceptance. No credit card required, no hidden fees, and no forced upgrades. Paid plans unlock unlimited clients, advanced reporting, and additional invoice templates for businesses ready to scale.
Stars
Forks
Last commit
Stars
Forks
Last commit
Stars
Forks
Last commit
Stars
Forks
Last commit
Repository age
Self-hosted
Auto-fetched .
Stars
Forks
Last commit
Compare with
Stars
Forks
Last commit
Compare with
Stars
Forks
Last commit
Compare with