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IRIS KashFlow alternatives · Accounting

Open-source alternatives to IRIS KashFlow

IRIS KashFlow 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.

IRIS KashFlow is a paid product with a free trial, starting at £13.50 per month, billed monthly (£1.35 for the first 6 months). 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 IRIS KashFlow

  1. Akaunting

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

    • Akaunting starts at $72 per year, self-hosted. IRIS KashFlow starts at £13.50 per month, billed monthly (£1.35 for the first 6 months).
    • Akaunting has a free plan. IRIS KashFlow does not, though it has a free trial.
    • Akaunting is open source and self-hostable, according to its own site.
    • IRIS KashFlow also covers payroll and quotes and estimates.
    Akaunting pricing and details

  2. 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. IRIS KashFlow starts at £13.50 per month, billed monthly (£1.35 for the first 6 months).
    • Odoo has a free plan. IRIS KashFlow does not, though it has a free trial.
    • Only Odoo lists iOS and Android apps.
    • Odoo is open source and self-hostable, according to its own site.
    Odoo pricing and details

  3. Bigcapital

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

    • Bigcapital is free. IRIS KashFlow starts at £13.50 per month, billed monthly (£1.35 for the first 6 months).
    • Bigcapital has a free plan. IRIS KashFlow does not, though it has a free trial.
    • Bigcapital is open source and self-hostable, according to its own site.
    • Bigcapital also covers inventory.
    Bigcapital pricing and details

  4. InvoiceShelf

    Open-source invoicing and expense tracking you host yourself

    • InvoiceShelf is free. IRIS KashFlow starts at £13.50 per month, billed monthly (£1.35 for the first 6 months).
    • InvoiceShelf has a free plan. IRIS KashFlow does not, though it has a free trial.
    • InvoiceShelf is open source and self-hostable, according to its own site.
    • IRIS KashFlow also covers bookkeeping and payroll.
    InvoiceShelf pricing and details

  5. LedgerSMB

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

    • LedgerSMB is free. IRIS KashFlow starts at £13.50 per month, billed monthly (£1.35 for the first 6 months).
    • LedgerSMB has a free plan. IRIS KashFlow does not, though it has a free trial.
    • LedgerSMB is open source and self-hostable, according to its own site.
    • LedgerSMB also covers inventory.
    LedgerSMB pricing and details

  6. GnuCash

    Free double-entry accounting for home and small business use

    • GnuCash is free. IRIS KashFlow starts at £13.50 per month, billed monthly (£1.35 for the first 6 months).
    • GnuCash has a free plan. IRIS KashFlow does not, though it has a free trial.
    • Only GnuCash lists Windows, macOS and Linux apps.
    • Only IRIS KashFlow lists a web app.
    GnuCash pricing and details

  7. InvoicePlane

    Free self-hosted invoicing for quotes, invoices and payments

    • InvoicePlane is free. IRIS KashFlow starts at £13.50 per month, billed monthly (£1.35 for the first 6 months).
    • InvoicePlane has a free plan. IRIS KashFlow does not, though it has a free trial.
    • InvoicePlane is open source and self-hostable, according to its own site.
    • IRIS KashFlow also covers reports, bookkeeping, expense tracking and payroll.
    InvoicePlane pricing and details

Common questions

Is there an open-source alternative to IRIS KashFlow?

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

Is IRIS KashFlow open source?

IRIS KashFlow 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 IRIS KashFlow: the alternatives its listing names first, then the tools that share the most features with it.