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K9s vs Stern: catalog facts
K9s	Stern
Free The open-source application is available without a license fee.	Free Free to download, with source published on GitHub.
Windows, macOS, Linux	Command line
Live cluster navigation and log inspection	Follows many pods and containers in one stream Colour-coded output per source
Requires access credentials and permissions for a Kubernetes cluster.	Terminal only, with no graphical interface Needs access to a Kubernetes cluster
Downloadable app	Downloadable app
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 23, 2026

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