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Open Source Invoicing & Payment Tools using JavaScript

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

Midday

Streamline your business finances and operations

  • Stars

    15,113

  • Last commit

    5 months ago

  • License

    AGPL-3.0
All-in-one tool for freelancers and small businesses to manage finances, track time, store files, and send invoices efficiently.

Open Source Alternative to:

YNAB

Gumroad

Your all-in-one marketplace for digital creators and products

  • Stars

    Stars growing over the last 30 days10,075

  • Last commit

    8 hours ago

  • License

    MIT
A digital marketplace platform where creators can sell digital products, from courses to software, with built-in payment processing and content delivery.

Open Source Alternative to:

Stripe

Polar

Modern payment infrastructure for digital products and SaaS

  • Stars

    10,454

  • Last commit

    8 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

    10,270

  • Last commit

    3 days 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

    10,464

  • 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

Crater

AI-powered embedded AR/AP automation for platforms

  • Stars

    8,356

  • Last commit

    2 years ago

  • License

    AGPL-3.0
Crater offers AI-driven invoicing workflows, payments, and working capital tools to enhance your platform with minimal technical effort.

Open Source Alternative to:

Quickbooks

Frappe Books

Modern desktop accounting made simple and free

  • Stars

    5,007

  • Last commit

    1 month ago

  • License

    AGPL-3.0
A user-friendly desktop accounting software that helps businesses manage invoices, track expenses, and handle bookkeeping with a modern interface.

Open Source Alternative to:

Quickbooks
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