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Dockpeek vs Cup: catalog facts
Dockpeek	Cup
Free Free to self-host, with optional sponsorship.	Free Free and open source.
Web, Self-hosted	Web, Self-hosted, Command line
One-click access to container web interfaces Image update checks	Fast checks across many images Web dashboard as well as a command-line mode
Docker only Lighter on management features than Portainer	Reports updates but does not apply them Maintained by a single developer
Self-hosted	Downloadable app, Self-hosted
Closed source	Open source
License not stated	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 October 2, 2026	Official website Full listing and sources Checked September 24, 2026

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