This is a really basic "todo list" demo built with Mithril.
It's largely an ES6/ES2015 port of the Mithril's Getting Started guide, with a bit of sugar and opinion thrown in to make it look and feel a lot like React.
In this case we're using Babel's JSX transform to convert inline XML into hyperscript (just nested calls to Mithral's m() function).
A Pen by Jason Miller on CodePen.