The Ruby on Rails API is switching to SDoc starting with 3.1. SDoc is a RDoc format created by Володя Колесников (@voloko) that has been powering railsapi.com for a long time. Among other things, SDoc provides a search box with fuzzy match completion, tree browsing, keyboard navigation, and a really nice template. You can already see the upgrade in the edge API. We’d like to thank very much Володя