Code · Vendor site 2026-10-04
NATS is a cloud-native, open-source messaging system for high-performance pub/sub, request/reply, and streaming workloads. It targets distributed systems, microservices, and agent fabrics that need lightweight real-time communication.
Understand the total cost
Free
Free
NATS server and client ecosystems are open source; nats.io focuses on downloads and docs without public USD SaaS pricing on the main site.
No retained pricing changes yet. A current price alone does not establish a historical trend.
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Yes. NATS.io has an ongoing free plan. NATS server and client ecosystems are open source; nats.io focuses on downloads and docs without public USD SaaS pricing on the main site.
NATS.io is listed as free. No paid plan with a published price was found.
API or developer access is mentioned. Documentation covers client libraries and wire protocols for integrating NATS messaging.