Midori is a lightweight JavaScript framework that aims to make web development with JavaScript easier. It includes features like CSS selectors, tabs, drag and drop, and more. Midori uses Ajax to allow web applications to retrieve data from the server without refreshing the page. Documentation on how to use Midori can be found on their website at http://www.midorijs.com/docs.html, including instructions for adding Midori to web pages and examples of using its modules. Midori is free to download from http://www.midorijs.com/ and supports major browsers like Chrome, Opera, and Safari.