Skylight is a smart profiler that lets you quickly diagnose and resolve performance issues with your Rails apps where it matters: in production. It's built by the fine folks at Tilde Inc, who have spent the last few years building open source projects like Ember, Handlebars and Rails itself. Visit skylight.io to start your free trial.
LaunchDarkly is a Feature Management Platform that serves over 10 billion feature flags daily to help software teams build better software, faster. Feature flagging is an industry best practice of wrapping a new or risky section of code or infrastructure change with a flag. Each flag can easily be turned off independent of code deployment (aka ”dark launching”).