Skip to content
ToolGPA

IRIS KashFlow alternatives · Accounting

IRIS KashFlow alternatives with a Linux app

The IRIS KashFlow listing does not include a Linux app. 4 of the 128 other accounting and invoicing tools in this directory list a Linux app.

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). 3 of them are free or have a free plan.

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

How each one differs from IRIS KashFlow

  1. Manager.io

    Free offline accounting for Windows, Mac and Linux, with a paid cloud

    • Manager.io starts at $59 per month, billed monthly. IRIS KashFlow starts at £13.50 per month, billed monthly (£1.35 for the first 6 months).
    • Manager.io has a free plan. IRIS KashFlow does not, though it has a free trial.
    • Only Manager.io lists Windows, macOS and Linux apps.
    • Manager.io is self-hostable, according to its own site.
    Manager.io pricing and details

  2. Invoice Ninja

    Invoicing, expenses and time tracking with a free plan

    • Invoice Ninja starts at $14 per month, billed monthly ($140 billed annually). IRIS KashFlow starts at £13.50 per month, billed monthly (£1.35 for the first 6 months).
    • Invoice Ninja has a free plan. IRIS KashFlow does not, though it has a free trial.
    • Only Invoice Ninja lists macOS, Windows, Linux, iOS and Android apps.
    • Invoice Ninja is self-hostable, according to its own site.
    Invoice Ninja pricing and details

  3. 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

  4. TaxCalc

    UK tax return and accounts software for accountancy practices

    • TaxCalc starts at £187 per year (Tax Return Production, up to 12 individual clients). IRIS KashFlow starts at £13.50 per month, billed monthly (£1.35 for the first 6 months).
    • Only TaxCalc lists Windows, macOS and Linux apps.
    • Only IRIS KashFlow lists a web app.
    • TaxCalc also covers forms.
    TaxCalc pricing and details

Common questions

Which IRIS KashFlow alternatives have a Linux app?

Manager.io, Invoice Ninja, GnuCash and TaxCalc list a Linux app.

Does IRIS KashFlow have a Linux app?

The IRIS KashFlow listing does not include a Linux app. It lists Web.

Which of these accounting and invoicing tools are free?

Manager.io, Invoice Ninja and GnuCash are free or have a free plan.

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.