A tiny (118 bytes), secure, URL-friendly, unique string ID generator for JavaScript

Server app for the TestTrack multi-platform split-testing and feature-gating system

Betterment's framework for locally developing and testing service-oriented apps in isolation with WebMock and Sinatra-based fakes

The Google Chrome Extension for TestTrack

The JavaScript client for TestTrack

The Ruby on Rails client for TestTrack

A curated list of engineering blogs