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kitty vs rxvt-unicode: catalog facts
kitty	rxvt-unicode
Free Free and open source under the GPL.	Free Free and open source under the GPL-3.0-only license.
macOS, Linux	Linux
Inline image display through its own graphics protocol Kittens add diffing, hints, remote control and SSH integration	Unicode and locale-aware text handling Daemon mode can open multiple windows
No Windows build Configuration is a text file with no graphical settings	Complex script support is not implemented Right-to-left rendering is not implemented
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-3.0-only
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.