> Anyone know of any other language communities with similar foundations?

We got the idea from Ruby Together - https://rubytogether.org.

> the Clojure community, from my understanding, tends to concentrate around the same tools.

I'd say relative to it's size the Clojure community is quite diverse in it's tooling and library ecosystem, compared to say, Ruby. Because of the dispersion of projects and interest, we survey our members quarterly and pick projects based on the survey results.

It's pretty easy to point out the huge players in most ecosystems I feel like. Can't think of any languages that are a counterexample. That's not necessarily a bad thing - lots of mind share helps systems get better on the average. I think Clojure has less in the way of ecosystem-dominating frameworks than is usual as far as web frameworks go.

Clojure is pretty unique in that the ecosystem is very much not one-size-fits-all. http://www.luminusweb.net/ is a great example of the clojure philosophy of bundling together a variety of uncoupled components to get a great dev experience. It even has a variety of CLI init options to swap out different components for your preference (https://github.com/luminus-framework/luminus-template)