Open-source repos for subscription billing
11 repos tagged Subscription billing, sorted by GitHub stars. Add filters from the other category types to narrow the list.
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getlago/lago
Metering and usage-based billing engine that turns events into invoices.
Invoicing, Payments, Web, Stripe, Finance, Engineering, SaaS, Finance and fintech
10.8k starsAGPL-3.0Updated 3 Nov 2026
polarsource/polar
Billing and checkout for digital products and subscriptions, with merchant-of-record option.
Payments, Web, Stripe, Finance, Sales, SaaS, Creators, Indie hackers, Open-source maintainers
10.5k starsApache-2.0Updated 3 Nov 2026
flexprice/flexprice
Usage-based pricing and billing backend for metering, credits and invoices.
6.9k starsAGPL-3.0Updated 3 Nov 2026
t3dotgg/stripe-recommendations
Practical guide to wiring Stripe subscriptions without sync bugs.
6.5k starsMITUpdated 8 Feb 2025
killbill/killbill
Java subscription billing and payments platform with a plugin system.
Payments, Invoicing, Web, Finance, Engineering, SaaS, Finance and fintech
5.8k starsApache-2.0Updated 29 Oct 2026
laravel/cashier-stripe
Laravel package for Stripe subscriptions, invoices and checkout.
2.5k starsMITUpdated 20 Oct 2026
openmeterio/openmeter
Real-time usage metering for AI and API products, with billing integrations.
2.4k starsApache-2.0Updated 2 Nov 2026
pay-rails/pay
Rails engine for payments and subscriptions across Stripe, Paddle and Braintree.
2.3k starsMITUpdated 2 Nov 2026
dj-stripe/dj-stripe
Django app that syncs Stripe objects into Django models for billing logic.
1.8k starsMITUpdated 3 Nov 2026
FOSSBilling/FOSSBilling
Billing and client management for hosting and service businesses.
Invoicing, CRM, Web, Finance, Customer support, B2B services, SaaS, Self hosters
1.7k starsApache-2.0Updated 2 Nov 2026
meteroid-oss/meteroid
Billing platform for SaaS with pricing plans, usage metering and invoicing.
1.4k starsAGPL-3.0Updated 30 Oct 2026