With teams, companies, and open source projects adopting Herb, it’s proving itself at scale and is on track to become an opt-in view engine in Rails 8.2.
This talk explores what Herb brings to Rails, from its ActionView integration to the tooling and developer experience it unlocks. Then I’ll introduce the first production-ready version of ReActionView, bringing Phoenix LiveView-like fine-grained reactivity to standard HTML+ERB templates. Optional, gradual, no JavaScript framework, no new file format.
Marco is a passionate full-stack developer and a dedicated open-source contributor. He is the creator of Herb, an HTML-aware ERB parser and tooling foundation, and ReActionView, an experimental initiative exploring structured and reactive view rendering in Ruby. He has open-sourced, maintained, and contributed to numerous libraries in the Ruby ecosystem and was awarded the Rails Luminary Award in 2025.