We have released a new version of the OLAC visualiser, which takes OLAC metadata and prepares it in a novel view by geographic location, identifying each language and showing how many items are in OLAC repositories for that language.
https://language-archives.services/olacvis/

For each language you can see the kind of resources available (Primary texts; Lexical resources; Language descriptions; Other resources about the language; Other resources in the language).

You can select a country and download all information about languages in that country. Look for the link "browse the data by country" in the sidebar.

This page is refreshed once a week.

The project outline and links to the source code are here: https://language-archives.services/about/olac-vis/

This site was produced by Marco La Rosa in a project led by Nick Thieberger and funded by the ARC Centre of Excellence for the Dynamics of Language