Open source alternatives to Zuora

3 open source projects replace Zuora, ranked by how safe each is to depend on.

98 · Healthy

Usage metering and billing engine for subscriptions, usage-based plans, credits and invoicing.

AGPL-3.0★ 11kLast commit yesterday

88 · Healthy

Real-time usage metering for AI, API and infrastructure products, feeding usage-based billing.

Free to useApache-2.0★ 2.4kLast commit yesterday

77 · Stable

Subscription billing and payments platform with product catalogs, invoicing, dunning and payment gateway plugins.

Free to useApache-2.0★ 5.8kLast commit yesterday

98 · Healthy

88 · Healthy

77 · Stable

At a glance

Health and license are separate verdicts: a project can be well maintained and still not be open source.

Project	Health	License	Stars	Last commit
Lago	98 · Healthy	Free, share hosted changesAGPL-3.0	11k	yesterday
OpenMeter	88 · Healthy	Free to useApache-2.0	2.4k	yesterday
Kill Bill	77 · Stable	Free to useApache-2.0	5.8k	yesterday

Zuora is a paid billing & subscriptions product. See all open source billing & subscriptions tools, ranked the same way.

Scores last refreshed from GitHub on 9 October 2026. How we score.