Together with  FastRuby.io

What Active Rubyists at RubyKaigi Are Using in 2026 — RubyGems's maintainer shares data based upon a survey of RubyKaigi 2026 attendees. It's an interesting sample, as RubyKaigi attendees tend to be active shippers, maintainers, and prominent Rubyists. Ruby 4.0 usage is strong, VS Code dominates, and most are using Claude Code and Docker Compose.

Hiroshi Shibata

💡 On the topic of surveys, the 2026 Ruby on Rails Community Survey closes tomorrow, so take it now if you can.

Hanami 3.0: The Ruby Framework in Full Bloom — The popular modular app framework rolls out some major features, including mailers, i18n, and Minitest support, along with performance gains. The new homepage does a great job of making Hanami's case. If you want a framework that’s super modular and lets you pick and choose what you need, it's a must-see.

Tim Riley

⚡️ IN BRIEF:

Five Rules for Taming RSpec's let Overuse Problem — Concrete, code-backed rules for using let effectively, based on advice from RSpec maintainers and years of consulting. There’s also an agent skill you can use to enforce the idea.

Michael Toppa

📄 An Introduction to Server Sent Events in Ruby – How to push data in real-time over a single request with Rack 3.0. Brooke Kuhlmann

📄 The 'Constant Frozen at Boot' Bug: A Ruby Exercise for an Interview – A real production bug that makes for a good interview question. Evgeny Zhdanov

📄 When Does an Active Record Query Actually Run? – “An ActiveRecord::Relation is deferred query intent, not database truth.” Syed Aslam

📄 Getting Started with Claude Code, on macOS, with chruby and RSpec Jonathan Rochkind

Activepad: A Rails 'Scratchpad' for macOS — A paid app you point at a Rails project (local or remote) to get a tidy editor that provides a Rails console-like experience for building and running Ruby snippets.

Cengiz Gürtusgil

  • Rails Semantic Logger 5.0 – Replaces the Rails default logger with Semantic Logger for structured logging.

  • pru 0.3 – 'Pipeable Ruby' tool that can replace grep/sed/awk, etc. and let you use Ruby expressions instead.

  • Crass 1.0.7 – Pure Ruby CSS parser that supports CSS Syntax Level 3 with tolerance for broken input.

  • rspec-openapi 0.30 – Generate OpenAPI schemas from RSpec request specs.

  • wasmtime-rb 46.0 – Ruby WebAssembly runtime powered by Wasmtime.

  • IRuby 0.8.3 – Ruby kernel for Jupyter/IPython Notebook.

🔬 Shipping AI code? Undercover CI catches untested methods in your PRs before you merge. Coverage percentages won't. Free for open source.

🚂 Rails slow? AppSignal finds N+1s & slow queries fast.

Postgres is already your Rails database. TimescaleDB makes it your analytics database too.

📢  Elsewhere in the ecosystem