Alacritty

Alacritty is the fastest terminal emulator in existence. Using the GPU for
rendering enables optimizations that simply aren't possible without it.
Alacritty currently supports macOS, Linux, BSD, and Windows.

About

Alacritty is a terminal emulator with a strong focus on simplicity and
performance. With such a strong focus on performance, included features are
carefully considered and you can always expect Alacritty to be blazingly fast.
By making sane choices for defaults, Alacritty requires no additional setup.
However, it does allow configuration of many aspects of the
terminal.

The software is considered to be at a beta level of readiness -- there are
a few missing features and bugs to be fixed, but it is already used by many as
a daily driver.

Precompiled binaries are available from the GitHub releases page.

Further information

• Announcing Alacritty, a GPU-Accelerated Terminal Emulator January 6, 2017
• A short talk about Alacritty at the Rust Meetup January 2017 (starts at 57:00)
• Alacritty Lands Scrollback, Publishes Benchmarks September 17, 2018

Installation

Some operating systems already provide binaries for Alacritty, for everyone
else the instructions to build Alacritty from source can be found here.

Arch Linux

pacman -S alacritty

openSUSE Tumbleweed

zypper in alacritty

Void Linux

xbps-install alacritty

Gentoo Linux

emerge x11-terms/alacritty

Mageia 7+

urpmi alacritty

FreeBSD

pkg install alacritty

NixOS

nix-env -iA nixos.alacritty

Solus

eopkg install alacritty

macOS

brew cask install alacritty

Once the cask is installed, it is recommended to setup the manual page,
shell completions, and terminfo definitions.

Windows

Via Chocolatey

choco install alacritty

Via Scoop

scoop bucket add extras
scoop install alacritty

Other

Prebuilt binaries for Linux, macOS, and Windows can be downloaded from the
GitHub releases page.

To work properly on Windows, Alacritty requires winpty to emulate UNIX's PTY
API. The agent is a single binary (winpty-agent.exe) which must be in
the same directory as the Alacritty executable and is available through the
GitHub releases page.

Configuration

Although it's possible the default configuration would work on your system,
you'll probably end up wanting to customize it anyhow. There is a default
alacritty.yml at the Git repository root. Alacritty looks for the
configuration file at the following paths:

1. $XDG_CONFIG_HOME/alacritty/alacritty.yml
2. $XDG_CONFIG_HOME/alacritty.yml
3. $HOME/.config/alacritty/alacritty.yml
4. $HOME/.alacritty.yml

If none of these paths are found then
$XDG_CONFIG_HOME/alacritty/alacritty.yml is created once Alacritty is first
run. On most systems this often defaults to
$HOME/.config/alacritty/alacritty.yml.

Many configuration options will take effect immediately upon saving changes to
the config file. For more information about the config file structure, refer to
the default config file.

Windows

On Windows the config file is located at:

%APPDATA%\alacritty\alacritty.yml

Issues (known, unknown, feature requests, etc.)

If you run into a problem with Alacritty, please file an issue. If you've got a
feature request, feel free to ask about it. Please just keep in mind Alacritty
is focused on simplicity and performance, and not all features are in line with
that goal.

Before opening a new issue, please check if it has already been reported.
There's a chance someone else has already reported it, and you can subscribe to
that issue to keep up on the latest developments.

FAQ

Is it really the fastest terminal emulator?

In the terminals we've benchmarked,
Alacritty is either faster or way faster than the others. If you've found a
case where this isn't true, please report a bug.

Why isn't feature X implemented?

Alacritty has many great features, but not every feature from every other
terminal. This could be for a number of reasons, but sometimes it's just not a
good fit for Alacritty. This means you won't find things like tabs or splits
(which are best left to a window manager or terminal multiplexer) nor
niceties like a GUI config editor.

macOS + tmux + vim is slow! I thought this was supposed to be fast!

This appears to be an issue outside of terminal emulators; either macOS has an
IPC performance issue, or either tmux or vim (or both) have a bug. This same
issue can be seen in iTerm2 and Terminal.app. I've found that if tmux is
running on another machine which is connected to Alacritty via SSH, this issue
disappears. Actual throughput and rendering performance are still better in
Alacritty.

My arrow keys don't work.

It sounds like you deleted some key bindings from your config file. Please
reference the default config file to restore them.

IRC

Alacritty discussion can be found in #alacritty on freenode.

Wayland

Wayland support is available, but not everything works as expected. Many people
have found a better experience using XWayland which can be achieved by
launching Alacritty with the WAYLAND_DISPLAY environment variable cleared:

env WAYLAND_DISPLAY="" alacritty

If you're interested in seeing our Wayland support improve, please head over to
the Wayland meta issue on the winit project to see how you may contribute.

License

Alacritty is released under the Apache License, Version 2.0.