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Open Source Invoicing & Payment Tools using Sentry

A curated collection of the best open source tools for creating invoices and processing payments. using Sentry.

Polar

Modern payment infrastructure for digital products and SaaS

  • Stars

    10,440

  • Last commit

    15 hours ago

  • License

    Apache-2.0
Comprehensive payment solution with built-in tax handling, automated benefits, and seamless integrations for digital product and SaaS businesses.

Open Source Alternative to:

Stripe

Akaunting

Free online accounting for small businesses and freelancers

  • Stars

    10,254

  • Last commit

    15 hours ago

  • License

    Unknown
Self-hostable accounting software covering invoicing, expense tracking, cash flow, and client portals. Free to use, available in 50+ languages.

Open Source Alternative to:

Quickbooks

Invoice Ninja

Send invoices, accept payments, manage your business—all free

  • Stars

    10,403

  • Last commit

    1 day ago

  • License

    Elastic-2.0
Free invoicing software for freelancers and small businesses. Create professional invoices, track expenses, accept online payments, and manage projects without hidden fees.

Open Source Alternative to:

Quickbooks
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