Open source payments projects
Every project in the registry tagged payments, ranked by real GitHub adoption.
Transform complex usage data into accurate, real-time billing
Modern payment infrastructure for digital products and SaaS
Send invoices, accept payments, manage your business—all free
Automate financial processes for smarter business decisions
开源优雅的跨平台收款网关 GM Pay(formerly known as EPUSDT)
Flexible billing infrastructure for modern SaaS
Frequently asked questions
How many open source payments projects are there?
This registry tracks 6 projects tagged payments, with 39,877 GitHub stars between them. The most-adopted is Lago at 10,568 stars.
Are these payments projects free to use?
Yes — 5 of the 6 carry an explicit open-source licence across 3 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which payments project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these payments projects still maintained?
6 of the 6 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.