Polar vs Zuora
Polar and Zuora are both billing and subscriptions software. Polar is open source under Apache-2.0, with 10k GitHub stars. Zuora is a commercial product from Zuora.
Which to pick
- Pick Polar when
- You sell software or digital products internationally and want tax handling and billing done for you.
- Pick Zuora when
- A large company with complex subscription and usage contracts needs billing and ASC 606 revenue recognition at enterprise scale.
Side by side
A merchant-of-record billing platform for selling subscriptions, digital products and usage-based plans, handling payments and sales tax.
Enterprise subscription management for quote-to-cash: billing, payments, revenue recognition and collections.
Merchant-of-record means a percentage fee on each sale, and the hosted service is the real product even though the code is open.
Implementation is long and costly, and it is too heavy for small SaaS companies.
Production-ready (both)
Cloud service (both)
Python, FastAPI, TypeScript and Next.js
Not published
Open source, Apache-2.0 (permissive)
Closed source, sold by Zuora
You can build it into a product you sell, as long as you keep its copyright notice.
Closed source: you use it under the maker's terms and cannot change or resell the code.
10k GitHub stars
315 Wikipedia readers a month on phones
Established: started 3 years ago, latest release @polar-sh/better-auth@2.1.3.
Not known
Other comparisons
More billing and subscription management systems
Both sides were judged on 2026-11-03 from makers' descriptions, Wikipedia, READMEs and GitHub data. License, age and popularity lines are worked out directly.