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Himalaya vs alot: catalog facts
Himalaya	alot
Free The open-source software is available without a license fee. Hosting, hardware and…	Free Free and open source.
Windows, macOS, Linux, Command line	Linux, Command line
Supports several mail protocols and local mailbox formats.	Fast search and tagging through notmuch Keyboard and command-prompt driven interface
Mail authentication and account configuration are required.	Needs notmuch and separate tools to fetch and send mail Terminal only, with no graphical interface
Downloadable app	Downloadable app
Open source	Open source
License: MIT OR Apache-2.0	License: GPL-3.0
Not stated if an account is needed	No account needed
Not stated if it works offline	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.