murrtty

murrtty is a native Windows terminal, forked from Ghostty. It is Ghostty's core (terminal emulation, fonts, rendering, configuration) with a Win32 application around it, and it diverges from Ghostty where Windows or its own features call for it. Its site is murrtty.org, which also compares it with the other Windows terminals built from Ghostty.

Ghostty is created by Mitchell Hashimoto and the Ghostty contributors, and most of the code in this repository is theirs. murrtty is not affiliated with or endorsed by the Ghostty project. Please report bugs in murrtty as this repository's Issues and share ideas in its Discussions, not with Ghostty; security problems privately, as SECURITY.md says.

What this is

Upstream Ghostty ships a native macOS app and a GTK app for Linux. On Windows, upstream builds only libghostty-vt, its terminal-emulation library: the full core did not compile for Windows and there is no application, and Ghostty's maintainers don't plan to add one. murrtty began as a port that adds the missing pieces, so that building on Windows (zig build -Dtarget=x86_64-windows-gnu, which build-windows.cmd runs) produces a native murrtty.exe:

• A Win32 application runtime (src/apprt/win32/): windows, tabs and splits, GTK's header bar and menus, keyboard and IME input, mouse, clipboard, DPI scaling, the system theme, notifications, the tray, the quick terminal, session restore and the rest listed under Status, built directly on the Windows API (mainly user32, gdi32, imm32, dwmapi and UI Automation).
• A Direct3D 11 renderer (src/renderer/D3D11.zig, src/renderer/d3d11/, its HLSL in src/renderer/shaders/hlsl/), murrtty's only renderer: each terminal gets a Direct3D 11 device and presents through DirectComposition, on the graphics card or, without a Direct3D 11 driver, on Windows' own software renderer (WARP). It became the default in November 2026 (0.4.0) drawing what murrtty's OpenGL renderer drew, pixel for pixel, which the GUI tests checked; that OpenGL path (WGL, and the Mesa software OpenGL beside it) retired after 0.6.0, and the build refuses -Drenderer=opengl for Windows. Other platforms keep Ghostty's EGL and Metal paths.
• Fixes to Windows-only code in the shared core that had stopped compiling or misbehaved, such as a hang when a terminal closed (src/termio/Exec.zig).

Everything else (terminal emulation, the parser, fonts and shaping, configuration, themes) is Ghostty's shared core. murrtty changes it where Windows needs something else (prompt marks behind ConPTY, the shell's working directory, shell integration for PowerShell and cmd) and where murrtty names itself: programs see TERM_PROGRAM=murrtty and an XTVERSION of murrtty, while TERM stays xterm-ghostty, so they still get the capabilities the shared core implements.

murrtty merges upstream Ghostty from time to time instead of rebasing onto it. It last merged Ghostty 1.4.0 (the release tag v1.4.0, October 2026).

murrtty numbers its own releases, apart from Ghostty's: semantic versions starting at 0.1.0, each release tagged murrtty-vX.Y.Z. While it is 0.x, a minor version brings new features or an upstream merge and a patch version brings fixes. murrtty +version names both versions, as in murrtty 0.7.0, based on Ghostty 1.4.1-dev; a build of any other commit is a development build of the next release, such as 0.8.0-main+1a2b3c4 (Build says what that means). The latest release, 0.7.0 (x64 and ARM64), is a preview. Besides building from source (see Build), the release zips and the installers, it installs with Scoop:

scoop bucket add murrtty https://github.com/murr2k/scoop-murrtty
scoop install murrtty/murrtty

A winget package (MurrayKopit.murrtty) is under review. From 0.5.0 on, each release also has an installer for each architecture (murrtty-<version>-windows-<x86_64|aarch64>-setup.exe). It installs for you alone, without administrator rights, into %LOCALAPPDATA%\Programs\murrtty, with a Start menu shortcut and, unless you untick it, "Open in murrtty" on folders, folder backgrounds and drives (on Windows 11 under Show more options). Its uninstaller keeps your configuration and session.

From 0.5.0 on, each release is built from its tag on GitHub's hosted runners, and each zip carries a build provenance attestation: gh attestation verify <zip> -R murr2k/murrtty names the workflow run and the commit it was built from. 0.1.0 to 0.4.0 were built on the development machine.

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