* The OpenJS Foundation (Node)
* Ruby Central is similar but also different
* Parrot (for Perl 6...) had a foundation, not clear on what the project is like now though
* https://www.perlfoundation.org/
And of course, many many foundations that support open source projects that aren't programming languages.
* D [1]
* F# [2]
* Perl [3]
I'm sure there are more.
1: https://dlang.org/foundation/about.html 2: https://fsharp.org/ 3: https://www.perlfoundation.org/
baked by Microsoft but more and more community driven
We began life primarily to support the YAPC (Yet Another Perl Conference) community-run conferences, but now we also support development of the language itself.
Apologies for the mistake!
"A new not-for-profit center established at EPFL."
Hopefully they're advising Mozilla on this.