Is this the canonical “Awesome Haxe” page: https://github.com/nadako/awesome-haxe?
That one is not really maintained, but I’m not aware of a more active one either.
There’s another one for gamedev in particular: https://github.com/Dvergar/awesome-haxe-gamedev
A long time ago I used to be an enthusiastic contributor to: http://old.haxe.org/doc/libraries
When the new site got launched, I figured the Haxelib repo was likely a better standard way of finding the best libraries.