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kitty vs Rio: catalog facts
kitty	Rio
Free Free and open source under the GPL.	Free The open-source software is available without a license fee. Hosting, hardware and…
macOS, Linux	Windows, macOS, Linux
Inline image display through its own graphics protocol Kittens add diffing, hints, remote control and SSH integration	Provides a modern interface for shell sessions.
No Windows build Configuration is a text file with no graphical settings	Shell programs and remote-access tools are installed separately.
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	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 September 22, 2026

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