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 for his work updating SDoc for the official API. Thanks man!