There are several fast Rust-based, GPU-accelerated terminal projects that are open source and under active development:
Alacritty: https://github.com/alacritty/alacritty
Wezterm: https://github.com/wez/wezterm
Fig ( https://fig.io/ ) isn't Rust, but it's worth noting as a YC-backed competitor terminal product that has autocomplete similar to Warp.dev. Their website is eerily similar to warp.dev 's website, to the point where I can't help but imagine one was the inspiration for the other.