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Captain vs Ducker: catalog facts
Captain	Ducker
Free Free and open source under the GPL-3.0 license.	Free Free and open source under the MIT license.
macOS	macOS, Linux, Command line
Shows running and stopped containers from the menu bar Groups containers created with Docker Compose	Supports Docker and Podman Provides interactive pages and keyboard actions
Available for macOS only	Requires Rust Cargo 1.88 or higher for Cargo installation
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: MIT
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 October 8, 2026	Official website Full listing and sources Checked October 8, 2026

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