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What's Up Docker vs Cup: catalog facts
What's Up Docker	Cup
Free Free and open source under the MIT licence.	Free Free and open source.
Web, Self-hosted	Web, Self-hosted, Command line
Supports Docker, Compose, Swarm, Kubernetes and Nomad Works with most public registries and self-hosted OCI registries	Fast checks across many images Web dashboard as well as a command-line mode
Needs to run as its own container or service Automatic updates can break setups if images change behaviour	Reports updates but does not apply them Maintained by a single developer
Self-hosted	Downloadable app, Self-hosted
Open source	Open source
License: MIT	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 23, 2026	Official website Full listing and sources Checked September 24, 2026

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