alacritty

Alacritty is a modern terminal emulator that runs on BSD, Linux, macOS and Windows, using OpenGL to render output via the GPU. By offloading rendering to graphics hardware it achieves high throughput and low latency, and it relies on external tools for features such as tabs or splits, keeping the core lightweight. Users can customize its behavior through a TOML configuration file placed in standard locations like $XDG_CONFIG_HOME/alacritty/alacritty.toml or %APPDATA%\alacritty\alacritty.toml on Windows.

The emulator provides sensible defaults while allowing extensive configuration, and it integrates with existing applications rather than reimplementing functionality. Pre‑compiled binaries are distributed through GitHub releases, and package managers on the supported platforms also offer installation. Documentation covers configuration options, requirements such as OpenGL ES 2.0 and Windows ConPTY support, and contribution guidelines.

Alacritty is open source under the Apache 2.0 license and is considered stable for daily use, though it remains at a beta level of feature completeness. It is aimed at developers and power users who prioritize performance and configurability in a terminal environment.