What are examples of awesome open source project websites?

Question

Often when an open source project is discussed here on HN there is a conversation around the project's website. Criticisms and suggestions for improvement get raised. In that spirit, could you name examples of awesome open source project websites? -- websites that hit all the key requirements for new and returning visitors. For extra points, please explain why the website is awesome.

asukachikaru · Accepted Answer

https://animejs.com/This is a js animation library so there may be some home advantage but very well made nontheless.

baobun · Answer

HAProxy, specifically the docs site, make a fantastic job of making the vast documentation accessible and navigable.
https://docs.haproxy.org/2.4/configuration.html
https://www.haproxy.com/documentation/haproxy-configuration-...
I see now there is a Beta of a newer design of the docs at .com which, looking at it now, I hope they just scrap.

sksrbWgbfK · Answer

https://charm.land/ who make "glamorous" Go libraries for writing pretty command-line tools.