A Cookbook of Ruby One-Liners — Ruby is a fantastic language for one-liners, whether in IRB or from the command line. We’ve linked to this cookbook before but it continues to prove very useful.

Sundeep Agarwal

Monitor Ruby Application Performance with Magic Dashboards — Let's monitor and fix performance issues within a Ruby on Rails application using magic dashboards.

AppSignal sponsor

Building Passwordless Email Auth in Rails — If you want to add authentication to a Rails app but without storing passwords or relying on third-party OAuth, is there any other solution? Here’s one: a passwordless login system that emails users so-called ‘magic links.’

Justin Searls

Maglev: An Embeddable Page Builder for Rails Apps — Built by the creators of LocomotiveCMS, Maglev adds a page builder into your Rails app (like Elementor in the WordPress ecosystem) complete with a nice UX. (Anyone else remember MagLev, the Ruby implementation?)

Didier Lafforgue

Shortcut Brings Product and Engineering Together. Try It for Free — The best issue tracking software is one that software developers are actually happy to use.

Shortcut (formerly Clubhouse.io) sponsor

Build a Table Editor with Trix and Turbo Frames in Rails — A tutorial that brings together a few ideas you don’t often see. Creating an editor for tables with ActionText’s Trix editor and Turbo Frames.

Julian Rubisch

Working with Crisp Boundaries — “In order to make your classes and methods more understandable, keep your boundaries crisp by accepting the minimum amount of argument information necessary in order to get the job done.”

Jason Swett

Truemail 3.0: Framework Agnostic Email Validator/Verifier — Verify email addresses by way of regexes, DNS, SMTP and more. v3.0 adds a way to specify addresses to always be allowed/blocked.

Vladislav Trotsenko

Jekyll 4.3.0: Ruby's Long Standing Static Site Generator — There might be a lot more options now (e.g. Bridgetown or Hugo) but Jekyll is still highly capable and well updated as a SSG, as this release proves.

Jekyll Maintainers

Is Your Ruby App Slow? Optimize Your Performance with Tune Report

FastRuby.io | Performance Optimization Services sponsor

ValidatesTimeliness 6.0: Enhanced Date and Time Validation — A validation plugin for ActiveModel and Rails that supports multiple ORMs, custom date/time formats, and handles timezones for you.

Adam Meehan

Textbringer 1.2: An Emacs-Like Text Editor Written in Ruby — Projects like this often fizzle out, but we first linked this almost six years ago in issue 344 and it’s great to see it continue to grow (even if we’re not on team Emacs.. shh..)

Shugo Maeda

Maxitest 4.2: Minitest, Plus All The Features You Always Wanted.. — Like what? Well, let's count the ways.. but there's the ability to quickly stop tests, support for multiple before and after blocks, and around blocks, for starters.

Michael Grosser

Fixed Price Monthly CodeCare, Maintenance and Upgrades for Rails Apps

REINTERACTIVE PTY LTD sponsor

Alba 2.0: The Fastest JSON Serializer for Ruby — v2 is billed as the ‘Kaigi on Rails’ edition to celebrate the creator’s involvement in that event – here’s the actual changelog and GitHub repo.

Masafumi Okura