OpenMeter

OpenMeter provides a self-service, usage-based billing platform with real-time metering for APIs and cloud-based products. It offers a flexible product catalog to model plans, credits, or commitments, SDKs for Node.js, Python, and Go, and integrations with CRM, tax, and payment providers (e.g., Stripe). It supports entitlements and quotas and enables sales teams to provision deals quickly. OpenMeter can be deployed as open-source software and also offers OpenMeter Cloud, including a free cloud option.