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Invoice NinjaInvoiceShelf
Freemium

Free plan available, with paid plans that carry a 30-day money-back guarantee.

 Free

Free and open source under the AGPL-3.0 licence, with no per-seat fees.

Linux, Web Web, Self-hosted
  • Supports many payment gateways for one-click client payments
  • Recurring invoices and auto-billing
  • Invoices, estimates, payments and expenses in one place
  • Recurring invoices and a customer portal
  • Hosted service requires an account
  • Some features are reserved for paid plans
  • You maintain the server and backups yourself
  • The 3.x branch is an alpha preview not meant for production data
Downloadable app, Hosted service Self-hosted
Open source Open source
License: AAL License: AGPL-3.0
Account needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked October 1, 2026

Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.