> The only downside I see is that it’s definitely led to the proliferation of commercializing OSS libs by making them slightly worse on purpose and adding a “go pro!” version

This is a slightly pessimistic take on open core :)

I'm personally a big fan, as opposed to libraries that are not maintained and die. Sidekiq's competitor, Resque, has a somewhat uncertain situation (it's been dead for an year or so, then new maintainers took over).

The advantage of open core is that nobody prevents devs to create their own plugins, especially for products that are accessible to developers without highly specific knowledge (say, a relational database); this is actually happening with Sidekiq - for example, there is a plugin for a more granular scheduler.

the problem is the opensource part becomes pure marketing. for example the documentation is always about how to do things the "pro" way and becomes useless and even feels sometimes hostile to people searching for alternatives

You're probably right. Just doesn't scratch quite the same egalitarian itch eh?

I think the lack of a dominant JavaScript domain model syntax has limited the availability of admin tools like django-admin. Maybe something driven by OpenAPI/Swagger model definitions?

It is ancient and no longer upgraded (and based on angularjs), but I'd argue that ng-admin (https://github.com/marmelab/ng-admin) is the fastest SPA/JavaScript admin framework out there. It is a bit opinionated about paging and filtering (and painful to do moderately complex UI customization), but beyond that I have seen nothing that has come close to the same level of "quickly get CRUD admin UI available" in react/vue land, largely because (similar to django) it had its own domain entity model.

The same team moved from there to react-admin, and looking at a couple of react-admin experiences I've been involved in I'd argue that it wasn't aiming for the same ease of use.

Regarding django-admin style tools, there are solutions like zk [1] & apache isis [2] for java which are somewhat comparable, though more enterprise oriented.

[1] https://www.zkoss.org/

[2] https://isis.apache.org/

I'm curious about the ones you like for Elixir! I've been looking for a bit and haven't found one that seems to be maintained and close to feature parity with Django admin

Oban is really great: https://getoban.pro

Built on Postgres, it lets your background jobs achieve transactionality and consistency with your database. Its architecture is also well designed to allow it to scale up to about as much as Postgres can handle. The Pro version comes with a great web UI built with Phoenix LiveView that does just about everything one could ask for.

Ash is an amazing framework for Elixir that comes with functionality very equivalent to DRF/filtersets/etc, admin, as well as automatic JSON APIs, GraphQL APIs, plus works great behind LiveView. The maintainer is extremely active and is about to release a much improved website for getting started and learning. I highly suggest joining the discord if you are looking for Django for Elixir.

Website: https://www.ash-elixir.org Discord: https://discord.com/invite/D7FNG2q

There definitely isn't one at feature parity, just better attempts than I've seen in other ecosystems, heh.

For JavaScript there's strapi [1]

https://strapi.io/

And Directus was recently ported from PHP to JavaScript as well: https://directus.io/