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pet vs um: catalog facts
pet	um
Free The open-source software is available without a license fee. Hosting, hardware and…	Free Free and open source under the MIT license.
Windows, macOS, Linux, Command line	macOS, Linux, Command line
Supports tags, search and parameters in saved commands.	Creates personal command reference pages Retrieves pages with a man-like command
You must review commands and supply the correct parameter values before execution.	Availability is documented for macOS and Linux
Downloadable app	Downloadable app
Open source	Open source
License: MIT	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 September 22, 2026	Official website Full listing and sources Checked October 8, 2026

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