cy is an experimental terminal multiplexer that aims to be a simple, modern, and ergonomic alternative to tmux. You can find out more in the documentation.
The cy project has a few main goals:
Be beautiful, fast, and easy-to-use, particularly for users who have not used tmux or who are intimidated by its default configuration.
Allow users to search in and replay any cy session.
Stay simple. cy is specifically not a clone of tmux and will never have all of its functionality (panes, etc).