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iamb vs polycule: catalog facts
iamb	polycule
Free Free and open source under the Apache-2.0 licence.	Free Free and open source under the EUPL-1.2.
Command line	Android
Vim keybindings throughout End-to-end encryption, threads and spaces	Keyboard-optimised interface Accessibility-focused development
Terminal only, no graphical interface Still pre-1.0 releases	Terminal-style look will not suit everyone Requires a Matrix account
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: EUPL-1.2
Account needed	Account needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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