Skip to content
ToolGPA

Invoice Ninja alternatives · Accounting

Open-source alternatives to Invoice Ninja

Invoice Ninja is not described as open source on its own site. 7 of the 128 other accounting and invoicing tools in this directory are open source, according to their own sites.

Invoice Ninja has a free plan. Paid plans start at $14 per month, billed monthly ($140 billed annually). All of them are free or have a free plan.

7 tools · Listings checked up to Nov 13, 2026 · Where the facts come from

How each one differs from Invoice Ninja

  1. Akaunting

    Open-source accounting you can host yourself or use in the cloud

    • Akaunting starts at $72 per year, self-hosted. Invoice Ninja starts at $14 per month, billed monthly ($140 billed annually).
    • Only Invoice Ninja lists macOS, Windows, Linux, iOS and Android apps.
    • Akaunting is open source, according to its own site.
    • Akaunting also covers reports and bookkeeping.
    Akaunting vs Invoice NinjaAkaunting pricing and details

  2. Bigcapital

    Open-source accounting you host yourself, with a cloud version planned

    • Bigcapital is free. Invoice Ninja starts at $14 per month, billed monthly ($140 billed annually).
    • Only Invoice Ninja lists macOS, Windows, Linux, iOS and Android apps.
    • Bigcapital is open source, according to its own site.
    • Bigcapital also covers reports, bookkeeping and inventory.
    Bigcapital vs Invoice NinjaBigcapital pricing and details

  3. GnuCash

    Free double-entry accounting for home and small business use

    • GnuCash is free. Invoice Ninja starts at $14 per month, billed monthly ($140 billed annually).
    • Only Invoice Ninja lists a web app.
    • Only Invoice Ninja lists iOS and Android apps.
    • GnuCash is open source, according to its own site.
    GnuCash vs Invoice NinjaGnuCash pricing and details

  4. InvoiceShelf

    Open-source invoicing and expense tracking you host yourself

    • InvoiceShelf is free. Invoice Ninja starts at $14 per month, billed monthly ($140 billed annually).
    • Only Invoice Ninja lists macOS, Windows, Linux, iOS and Android apps.
    • InvoiceShelf is open source, according to its own site.
    • InvoiceShelf also covers reports.
    InvoiceShelf pricing and details

  5. Odoo

    Business app suite whose Accounting app is free when used on its own

    • Odoo starts at $31.10 per user / month, billed annually, after $24.90 for the first 12 months. Invoice Ninja starts at $14 per month, billed monthly ($140 billed annually).
    • Only Invoice Ninja lists macOS, Windows and Linux apps.
    • Odoo is open source, according to its own site.
    • Odoo also covers reports and bookkeeping.
    Odoo pricing and details

  6. InvoicePlane

    Free self-hosted invoicing for quotes, invoices and payments

    • InvoicePlane is free. Invoice Ninja starts at $14 per month, billed monthly ($140 billed annually).
    • Only Invoice Ninja lists macOS, Windows, Linux, iOS and Android apps.
    • InvoicePlane is open source, according to its own site.
    • Invoice Ninja also covers time tracking and expense tracking.
    InvoicePlane pricing and details

  7. LedgerSMB

    Open-source double-entry accounting and ERP you install yourself

    • LedgerSMB is free. Invoice Ninja starts at $14 per month, billed monthly ($140 billed annually).
    • Only Invoice Ninja lists macOS, Windows, Linux, iOS and Android apps.
    • LedgerSMB is open source, according to its own site.
    • LedgerSMB also covers reports, bookkeeping and inventory.
    LedgerSMB pricing and details

Common questions

Is there an open-source alternative to Invoice Ninja?

Yes. Akaunting, Bigcapital, GnuCash, InvoiceShelf, Odoo, InvoicePlane and LedgerSMB are open source, according to their own sites.

Is Invoice Ninja open source?

Invoice Ninja is not described as open source on its own site. The listing was checked on Nov 12, 2026 against the pages it cites.

When was this checked?

Each listing shows its own date. On this page they run from Oct 17, 2026 to Nov 13, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.

This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to Invoice Ninja: the alternatives its listing names first, then the tools that share the most features with it.