Some off the top of my head are Alacritty (terminal emulator), exa (ls alternative), bat (cat alternative), and dog (dig alternative). Discord is rewriting a lot of their services from Go to Rust [0]. I personally built a CLI text editor in Rust [1] (very early development).
[0] https://blog.discord.com/why-discord-is-switching-from-go-to...
[1] https://github.com/andrewkdinh/via