Quip, A Cross-Platform Word Processor For Desktop, iOS, and Android

Quip is a cross-platform word processor that syncs documents across phones, tablets, and desktop PCs. The app allows users to collaborate on a single document, turn bulleted lists into checklists, and organize document edits and messages into threads. Quip is currently available to download from the iTunes App Store, a preview version of the in-development Android app is available to download from Google Play, and prospective users can sign up for an account on the Quip website.

images via Quip