The default spacing is too narrow for my liking but what's really cool is in the amount of customization that's possible, including lookalikes of some popular paid programming fonts (I'm partial to Iosvmata).

https://github.com/ahatem/IoskeleyMono

https://github.com/shytikov/pragmasevka

https://github.com/N-R-K/Iosvmata