hugo/docs/content/en/methods/pages/ByLanguage.md

title	description	categories	keywords	action
ByLanguage	Returns the given page collection sorted by language in ascending order.			related returnType signatures page.Pages PAGES.ByLanguage

{{ range .Site.AllPages.ByLanguage }}
  <h2><a href="{{ .RelPermalink }}">{{ .LinkTitle }}</a></h2>
{{ end }}

To sort in descending order:

{{ range .Site.AllPages.ByLanguage.Reverse }}
  <h2><a href="{{ .RelPermalink }}">{{ .LinkTitle }}</a></h2>
{{ end }}