lago
Open Source Metering and Usage Based Billing API ⭐️ Consumption tracking, Subscription management, Pricing iterations, Payment orchestration & Revenue analytics. lago is open source, written primarily in Go, released under GNU Affero General Public License v3.0. Its repository has 10.3K GitHub stars and 709 forks, and was last committed to within the last two weeks. Niched places it in Pricing, paywalls & upsells.
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