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Semaphore UI vs flowctl: catalog facts
Semaphore UI	flowctl
Free The open-source software is available without a license fee. Hosting, hardware and…	Free Free and open source under the Apache 2.0 licence.
Self-hosted, Web	Self-hosted
Organizes reusable tasks for Ansible and other deployment tools.	Approval gates for sensitive operations Remote execution on multiple nodes over SSH
Requires a server and configured automation tools.	Requires a PostgreSQL database Young project with a smaller community than Rundeck
Self-hosted	Self-hosted
Open source	Open source
License: MIT	License: Apache-2.0
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 September 22, 2026	Official website Full listing and sources Checked October 2, 2026

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