Paper by @Dropbox looks pretty awesome

https://www.dropbox.com/paper

Paper supports all phases of the creative process – from start to finish

A connected space to create and ideate together

Collaborative by default

Comments feel like conversations and attributions help people keep track of who contributed the perfect line, mood board or code snippet.

A flexible workspace

However you think – in words, code, pictures or motion – Paper brings it all together in one place.

Work on the go

Capture inspiration wherever it hits and keep projects moving forwards from anywhere with the Paper app. 

Simple by design

We’ve designed Paper so that your work looks good without extra formatting, and we’ve stripped out unnecessary features so you can focus on your work.