Salesforce has agreed to acquire Quip, Quip CEO Bret Taylor and Head of Product Kevin Gibbs announced Monday. Quip lets users manage live documents throughout the collaboration process. The deal is worth about $582 million, according to a Salesforce filing with the U.S. Securities and Exchange Commission. Quip provides a chat feature that's built into every document and spreadsheet. It lets users direct-message team members and comment directly on any piece of content.