Ash Framework – Model your domain, derive the rest 1 year ago
We support both Rails and Phoenix at Honeybadger.io (APM/error tracking), and I tend to personally prefer the more declarative/less-magic approach. We're still a Rails monolith primarily but have run Elixir services in production and are fans. We're just getting started on building some observability stuff for Ash, will be interesting to see how it compares.