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Tianji vs Nezha: catalog facts
Tianji	Nezha
Free Free and open source. Hosting, hardware and any external services are separate.	Free Free and open source.
Self-hosted	Linux, Self-hosted
Provides several monitoring views in one application Can be hosted on your own infrastructure	Lightweight dashboard and agents SSL certificate expiry monitoring
Requires deployment and configuration of data collection.	Needs a server to host the dashboard Much of the community documentation is in Chinese
Self-hosted	Self-hosted
Open source	Open source
License: Apache-2.0	License not stated
Not stated if an account is needed	No account 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 24, 2026

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