Thanks for this link, this site is much more complete than the submitted one, and also has more filtering options. The only strange thing is that selecting a language changes the syntax highlighting, but the code stays in JavaScript.

My current favorite is https://www.programmingfonts.org/#go-mono (and not just for Go!). Yeah, I prefer serif fonts, apparently I'm in a minority (16 serif fonts vs. 136 sans serif on this site).