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Himalaya vs Mutt: catalog facts
Himalaya	Mutt
Free The open-source software is available without a license fee. Hosting, hardware and…	Free Free and open source.
Windows, macOS, Linux, Command line	macOS, Linux, Command line
Supports several mail protocols and local mailbox formats.	Keyboard-driven and fast Works well over SSH
Mail authentication and account configuration are required.	Steep learning curve No graphical interface
Downloadable app	Downloadable app
Open source	Open source
License: MIT OR Apache-2.0	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 22, 2026	Official website Full listing and sources Checked September 24, 2026

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