Open Source Invoicing & Payment Tools
A curated collection of the best open source tools for creating invoices and processing payments..
Streamline your business finances and operations
Stars
15,116Last commit
5 months agoLicense
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:
Your all-in-one marketplace for digital creators and products
Stars
10,119Last commit
5 hours agoLicense
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:
Modern payment infrastructure for digital products and SaaS
Stars
10,469Last commit
5 hours agoLicense
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:
Free online accounting for small businesses and freelancers
Stars
10,292Last commit
5 hours agoLicense
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:
Send invoices, accept payments, manage your business—all free
Stars
10,545Last commit
20 hours agoLicense
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:
AI-powered embedded AR/AP automation for platforms
Stars
8,362Last commit
2 years agoLicense
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:
Modern desktop accounting made simple and free
Stars
5,008Last commit
1 month agoLicense
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:
CodeRabbit – The leading AI Code Review platform. Ship better quality code in 50% less time, with 90% fewer bugs.
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