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Uptrace vs Zipkin: catalog facts
Uptrace	Zipkin
Freemium A free edition or tier is available. Additional features or hosted services require…	Free Free and open source. Hosting, hardware and any external services are separate.
Self-hosted	Self-hosted
Provides linked observability views Offers a self-hosted deployment	Provides trace collection and lookup Shows how requests move through services
Requires telemetry instrumentation and a supported storage setup.	Requires instrumented applications and storage configuration.
Self-hosted	Self-hosted
Open source	Open source
License: AGPL-3.0	License: Apache-2.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.