Get Your Refinements On!
Using RVM, load up the bleeding-edge Ruby with Shugo Maeda's refinements feature.
A neat site profiling tool from Google.
Object Scopes in Rails 3.1
An update from Aaron Patterson on some new features coming in Rails 3.1.
If Akephalos isn't for you, try having selenium run headless on your CI box.
Named Arguments in JS
A web-based Ruby regular expression editor.
An apache module from Google to decrease page load times.
Quick Left-overs is a weekly series of things that end up in our "FancyBookLearning" Campfire room that we thought were interesting.