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Calyx vs Ghostty: catalog facts
Calyx	Ghostty
Free Free and open source under the MIT licence.	Free Free and open source under the MIT licence, created by Mitchell Hashimoto.
macOS	macOS, Linux
Built on the Ghostty terminal core Designed for supervising several coding agents	GPU rendering with genuinely native window chrome on each platform Very thorough terminal emulation, including the awkward edge cases
macOS only No tagged GitHub releases	No Windows build Younger than the alternatives, with a smaller body of shared configuration
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: MIT
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 October 2, 2026	Official website Full listing and sources Checked September 21, 2026

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