Seems like Supabase deserves a mention, with their contributions to the Postgres ecosystem.

https://supabase.com/

pg_graphql - https://supabase.com/blog/pg-graphql-v1

pg_jsonschema - https://supabase.com/blog/pg-jsonschema-a-postgres-extension...

Postgres WASM - https://supabase.com/blog/postgres-wasm

..And other open-source features.

Supabase didn't do Postgres WASM first, wasmer did FYI (3 years ago)

https://github.com/wasmerio/wasmer-postgres