[totetsu]

and Australia https://www.dta.gov.au/help-and-advice/digital-service-stand...

[Gigablah]

Here's Singapore's: https://www.designsystem.tech.gov.sg/

[aaronsnow]

And the US: https://designsystem.digital.gov/

[sjogress]

And Norway: https://www.designsystemet.no/