• Skylight - Newly announced performance monitoring service taking waiting list signups.
• Rails 4.0-stable - As expected, 4.0 is entering RC status for RailsConf and master has switched to being 4.1.
• Semaphore - Hosted CI server for Ruby.

• Flinto - Prototyping tool for iOS apps.

• Amazon Coins - If I had to bet, I'd bet on corporate-sponsored alternative currencies getting a lot more traction than BitCoin in the long run.
• Feed the Fire - An RSS to Firebase sync service - Might be the bare bones of an alternative to Google Reader.
• bluePen - "Online Visual CSS Editor" to let you tweak things right in the browser.
• Devpressed - Discussion board for developers suffering from depression.

• traceGL - Fancy code-flow visualizer for Javascript.
• Instrumenting Ruby on Rails with TraceView in under 10 minutes - Another service for deep performance monitoring.
• Google Glass for Rubyist - Speculative code based on published documentation.

• Alcatraz - Package manager for Xcode. Why should ST2 users have all the fun?
• Quickly get a fresh ubuntu install ready for ruby dev - Obviously you should read the script before running it.
• Don't Spam Your Users: Batch Notifications in Rails - How to avoid sending too much email all at once.
• Ruby on Rails Programming - Video course from Pragmatic.

• Expanded HTTP Method Support - Heroku tweaks to support Rails 4.
• Sync - Realtime Rails Partials - Use Rails with push updates to partial pages.
• Cucumber 1.3.1 released - On the way to 2.0.

Weeks of April 8 - April 21, 2013

There's still activity in the Rails repo, but no substantial new features have landed in the past two weeks. Rather, it's been fixing tiny bugs, improving documentation, picking up final versions of included gems, and so on. All signs point to a Rails 4.0 release coming soon, in my opinion.

• Mergit - Merge all of your ruby requires into a single file for ease of deployment.
• Garmoshka - Best responsive design accordion ever.
• Rails AB Testing - Simple Abs - An A/B testing library that requires minimal dependencies.

• jQuery 2.0 Released - Make sure you read about the supported browser changes before you switch.
• Let Nunes Do It - Easily extend and consume Rails instrumentation.
• Coffee-Rails - First piece of Rails 4.0 to put out a non-beta 4.0.0 version, I think.
• Amanda - Blog entine that yets you write in Markdown, save on Dropbox, and store in Redis.

• Parser - A fresh parser for all current versions of Ruby, written in Ruby.
• Chef Cookbooks for Busy Ruby Developers - One each for a web server and a database server.
• A Better Development Workflow with Vagrant - How to move over to using VMs for your own development.

• rear - Admin interface for the Espresso framework. Demo at http://rear.rbho.me/.
• Wanderlust - Some notes on effective use of Vagrant after a couple of years of use.
• Nitrous.io - The former action.io web development platform, now with a new name and more funding.
• Introducing TowTruck: A Collaboration Service for Every Website - Things like chat, co-browsing, and co-authoring as a service from Mozilla.
• Security Incident Update - If you've got a Linode account and aren't aware of the credit card breach, you should read this.

• NodeJ - Node.js compatible framework running atop the JVM so it has access to pure Java as well.
• MRI's Method Caches - James Golick explains why you should care and what he's trying to do to improve things.

• Teabag - Javascript test running integrated with Rails.
• Hobbit - Minimalist microframework built on top of Rack.
• Log - Javascript console logging with fancy formatting.
• Rove - Generator for vagrant configurations.

• Ruby 2.0 Works Hard So You Can Be Lazy - A look at the internals of lazy evaluation.
• rubocop - A ruby code style checker.
• Developer Tools Update - Firefox 22 - Some nifty new stuff lurking in this release.

If I'm more incoherent than usual, blame it on a MySQL-caused lack of sleep.

• BundleWatcher - Service to parse your Gemfile.lock and look for gem updates that affect you.
• BlueHackers.org - Online support for depressed developers. If you're feeling like life isn't worth it, please get help. This is one place to start.
• jq - "like sed for JSON data."

• Setting up Sublime Text 2 - A basic "getting started" guide. Personally I'd put more effort into learning functionality than worrying about a pretty icon, but that's just me.
• Phusion Passenger 4.0 Release Candidate 6 - Chugging right along.
• Persona Beta 2 launch - Mozilla's identity service is building bridges to OpenId and OAuth now.

• csscss - Scanner to parse CSS files for duplicated declarations.
• An HTTP reverse proxy for realtime - Introducing Pushpin, a proxy with special features for streaming and related use cases.
• Mackup - Synchronize developer tool settings on multiple Macs via Dropbox.
• Writerrific - Markdown editing directly in the browser.
• hull - "Social platform as a service."
• CocoaDocs - "Hosted Docs for Objective-C Libraries."
• Hoodie - Framework for frontend-only web apps with lots of magic baked in.
• Firepad - Open source real-time collaborative text editor.

Week of April 1 - April 7, 2013

• 274a3aa6 removes a lot of user-facing complexity from cookies. Now Rails will automatically pick the best cookie jar, and upgrade legacy signed cookies to encrypted cookies.
• A bunch of work in speeding up tests and a switch back from 'rails test' to 'rake test' are merged at 91efe395.

• TheComments 1.0.0 - Threaded comment system implemented for Rails 4.
• Using rbenv to manage rubies and gems - Together with instructions for switching from rvm.
• unicorn-formatter - "A majestic unicorn will leap across your screen when your specs pass."
• bootstrap-wysiwyg - Rich content editor for jQuery and Bootstrap.

• Why Rackspace is Suing the Most Notorious Patent Troll In America - It's good to see someone standing up to the trolls. Makes me happy to have stuff hosted at Rackspace.
• Introducing Mac, iOS and RubyMotion Testing on Travis CI - More fun for your CI needs.
• The No Nonsense Guide to Ember.js on Rails - Detailed step by step for getting set up.
• GemLou.pe - Browser bookmarket to show the dependencies of any gem.
• geo-bootstrap - Bootstrap theme for a GeoCities look.
• PostgreSQL 9.2.4, 9.1.9, 9.0.13 and 8.4.17 released - Updated your PostgreSQL installs to fix a major security issue.
• Interesting navigator.mozPay() For Web Payments - Interesting bit of experimental plumbing from Mozilla.
• Instacode - Instant hipster code screenshots.