ghostty-org/ghostty

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<h1> <p align="center"> <img src="https://github.com/user-attachments/assets/fe853809-ba8b-400b-83ab-a9a0da25be8a" alt="Logo" width="128"> <br>Ghostty </h1> <p align="center"> Fast, native, feature-rich terminal emulator pushing modern features. <br /> A native GUI or embeddable library via <code>libghostty</code>. <br /> <a href="#about">About</a> · <a href="https://ghostty.org/download">Download</a> · <a href="https://ghostty.org/docs">Documentation</a> · <a href="CONTRIBUTING.md">Contributing</a> · <a href="HACKING.md">Developing</a> </p> </p> ## About Ghostty is a terminal emulator that differentiates itself by being fast, feature-rich, and native. While there are many excellent terminal emulators available, they all force you to choose between speed, features, or native UIs. Ghostty provides all three. **`libghostty`** is a cross-platform, zero-dependency C and Zig library for building terminal emulators or utilizing terminal functionality (such as style parsing). Anyone can use `libghostty` to build a terminal emulator or embed a terminal into their own applications. See [Ghostling](https://github.com/ghostty-org/ghostling) for a minimal complete project example or the [`examples` directory](https://github.com/ghostty-org/ghostty/tree/main/example) for smaller examples of using `libghostty` in C and Zig. For more details, see [About Ghostty](https://ghostty.org/docs/about). ## Download See the [download page](https://ghostty.org/download) on the Ghostty website. ## Documentation See the [documentation](https://ghostty.org/docs) on the Ghostty website. ## Contributing and Developing If you have any ideas, issues, etc. regarding Ghostty, or would like to contribute to Ghostty through pull requests, please check out our ["Contributing to Ghostty"](CONTRIBUTING.md) document. Those who would like to get involved with Ghostty's development as well should also read the ["Developing Ghostty"](HACKING.md) document for more technical details. ## Roadmap and Status Ghostty is stable and in use by millions of people and machines daily. The high-level ambitious plan for the project, in order: | # | Step | Status | | :-: | ------------------------------------------------------- | :----: | | 1 | Standards-compliant terminal emulation | ✅ | | 2 | Competitive performance | ✅ | | 3 | Rich windowing features -- multi-window, tabbing, panes | ✅ | | 4 | Native Platform Experiences | ✅ | | 5 | Cross-platform `libghostty` for Embeddable Terminals | ✅ | | 6 | Ghostty-only Terminal Control Sequences | ❌ | Additional details for each step in the big roadmap below: #### Standards-Compliant Terminal Emulation Ghostty implements all of the regularly used control sequences and can run every mainstream terminal program without issue. For legacy sequences, we've done a [comprehensive xterm audit](https://github.com/ghostty-org/ghostty/issues/632) comparing Ghostty's behavior to xterm and building a set of conformance test cases. In addition to legacy sequences (what you'd call real "terminal" emulation), Ghostty also supports more modern sequences than almost any other terminal emulator. These features include things like the Kitty graphics protocol, Kitty image protocol, clipboard sequences, synchronized rendering, light/dark mode notifications, and many, many more. We believe Ghostty is one of the most compliant and feature-rich terminal emulators available. Terminal behavior is partially a de jure standard (i.e. [ECMA-48](https://ecma-international.org/publications-and-standards/standards/ecma-48/)) but mostly a de facto standard as defined by popular terminal emulators worldwide. Ghostty takes the approach that our behavior is defined by (1) standards, if available, (2) xterm, if the feature exists, (3) other popular terminals, in that order. This defines what the Ghostty project views as a "standard." #### Competitive Performance Ghostty is generally in the same performance category as the other highest performing terminal emulators. "The same performance category" means that Ghostty is much faster than traditional or "slow" terminals and is within an unnoticeable margin of the well-known "fast" terminals. For example, Ghostty and Alacritty are usually within a few percentage points of each other on various benchmarks, but are both something like 100x faster than Terminal.app and iTerm. However, Ghostty is much more feature rich than Alacritty and has a much more native app experience. This performance is achieved through high-level architectural decisions and low-level optimizations. At a high-level, Ghostty has a multi-threaded architecture with a dedicated read thread, write thread, and render thread per terminal. Our renderer uses OpenGL on Linux and Metal on macOS. Our read thread has a heavily optimized terminal parser that leverages CPU-specific SIMD instructions. Etc. #### Rich Windowing Features The Mac and Linux (build with GTK) apps support multi-window, tabbing, and splits with additional features such as tab renaming, coloring, etc. These features allow for a higher degree of organization and customization than single-window terminals. #### Native Platform Experiences Ghostty is a cross-platform terminal emulator but we don't aim for a least-common-denominator experience. There is a large, shared core written in Zig but we do a lot of platform-native things: - The macOS app is a true SwiftUI-based application with all the things you would expect such as real windowing, menu bars, a settings GUI, etc. - macOS uses a true Metal renderer with CoreText for font discovery. - macOS supports AppleScript, Apple Shortcuts (AppIntents), etc. - The Linux app is built with GTK. - The Linux app integrates deeply with systemd if available for things like always-on, new windows in a single instance, cgroup isolation, etc. Our goal with Ghostty is for users of whatever platform they run Ghostty on to think that Ghostty was built for their platform first and maybe even exclusively. We want Ghostty to feel like a native app on every platform, for the best definition of "native" on each platform. #### Cross-platform `libghostty` for Embeddable Terminals In addition to being a standalone terminal emulator, Ghostty is a C-compatible library for embedding a fast, feature-rich terminal emulator in any 3rd party project. This library is called `libghostty`. Due to the scope of this project, we're breaking libghostty down into separate libraries, starting with `libghostty-vt`. The goal of this project is to focus on parsing terminal sequences and maintaining terminal state. This is covered in more detail in this [blog post](https://mitchellh.com/writing/libghostty-is-coming). `libghostty-vt` is already available and usable today for Zig and C and is compatible for macOS, Linux, Windows, and WebAssembly. The functionality is extremely stable (since its been proven in Ghostty GUI for a long time), but the API signatures are still in flux. `libghostty` is already heavily in use. See [`examples`](https://github.com/ghostty-org/ghostty/tree/main/example) for small examples of using `libghostty` in C and Zig or the [Ghostling](https://github.com/ghostty-org/ghostling) project for a complete example. See [awesome-libghostty](https://github.com/Uzaaft/awesome-libghostty) for a list of projects and resources related to `libghostty`. `libghostty-vt` is released on its own, separately from Ghostty, with `vt-X.Y.Z` tags. To build or package it, see [`PACKAGING-LIBGHOSTTY.md`](PACKAGING-LIBGHOSTTY.md). To use it from a CMake project, see [`dist/cmake/README.md`](dist/cmake/README.md). We're still working on a better docs experience, but our [Doxygen website](https://lib.ghostty.org/vt/) is a good resource for the C API. #### Ghostty-only Terminal Control Sequences We want and believe that terminal applications can and should be able to do so much more. We've worked hard to support a wide variety of modern sequences created by other terminal emulators towards this end, but we also want to fill the gaps by creating our own sequences. We've been hesitant to do this up until now because we don't want to create more fragmentation in the terminal ecosystem by creating sequences that only work in Ghostty. But, we do want to balance that with the desire to push the terminal forward with stagnant standards and the slow pace of change in the terminal ecosystem. We haven't done any of this yet. ## Crash Reports Ghostty has a built-in crash reporter that will generate and save crash reports to disk. The crash reports are saved to the `$XDG_STATE_HOME/ghostty/crash` directory. If `$XDG_STATE_HOME` is not set, the default is `~/.local/state`. **Crash reports are _not_ automatically sent anywhere off your machine.** Crash reports are only generated the next time Ghostty is started after a crash. If Ghostty crashes and you want to generate a crash report, you must restart Ghostty at least once. You should see a message in the log that a crash report was generated. > [!NOTE] > > Use the `ghostty +crash-report` CLI command to get a list of available crash > reports. A future version of Ghostty will make the contents of the crash > reports more easily viewable through the CLI and GUI. Crash reports end in the `.ghosttycrash` extension. The crash reports are in [Sentry envelope format](https://develop.sentry.dev/sdk/envelopes/). You can upload these to your own Sentry account to view their contents, but the format is also publicly documented so any other available tools can also be used. The `ghostty +crash-report` CLI command can be used to list any crash reports. A future version of Ghostty will show you the contents of the crash report directly in the terminal. To send the crash report to the Ghostty project, you can use the following CLI command using the [Sentry CLI](https://docs.sentry.io/cli/installation/): ```shell-session SENTRY_DSN=https://e914ee84fd895c4fe324afa3e53dac76@o4507352570920960.ingest.us.sentry.io/4507850923638784 sentry-cli send-envelope --raw <path to ghostty crash> ``` > [!WARNING] > > The crash report can contain sensitive information. The report doesn't > purposely contain sensitive information, but it does contain the full > stack memory of each thread at the time of the crash. This information > is used to rebuild the stack trace but can also contain sensitive data > depending on when the crash occurred.

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Writes Git commit messages. Activates when the user asks to write a commit message, draft a commit message, or similar.

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2026-08-09

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