Application/document collaboration in a multi-device environment is provided. An application and associated document or other content, for example, a spreadsheet application and associated spreadsheet documents and content may be displayed on one or more endpoint display devices. A presenter may control the application/document from another device, for example, a smartphone, tablet-style computer, laptop computer, desktop computer, and the like. User interactions on the presenter control device may be reflected on the display device, including, document navigation, document editing, document entry, and the like. Document content may be previewed on the control device before it is sent to the display device. Document metadata and/or presenter notes/comments, etc., may be displayed only on the control device, but not on the display device, as desired by the presenter/user.