Alacritty is presented as a modern, cross-platform terminal emulator. Here's a summary of its main functionalities:

• Cross-Platform Support: Alacritty is compatible with BSD, Linux, macOS, and Windows operating systems.

• Performance-Oriented: By integrating with other applications, Alacritty aims to provide a flexible set of features with high performance.

• Sensible Defaults with Extensive Configuration: It comes with sensible default settings but allows for extensive customization.

• Beta Software: Alacritty is currently in beta development, meaning it might have some missing features and bugs, but it is already used by many as their primary terminal.

• Vi Mode: It offers a Vi Mode that allows users to move around and create selections using vi keybindings.

• Search Functionality: Users can search for any text within the scrollback buffer.

• Regex Hints: Alacritty supports Regex Hints to mark any text for interaction with the mouse or keyboard.

• Multi-Window Support: It provides Multi-Window functionality, which improves resource usage by utilizing only a single Alacritty process.

• Comprehensive Documentation: A full list of features can be found in Alacritty's documentation.