Google Docs, Sheets, Slides and Forms are a free, web-based word processor, a spreadsheet program, a presentation program and survey program respectively, all part of a software office suite offered by Google within its Google Drive service. The suite allows users to create and edit documents online while collaborating with other users in real-time.
The three apps are available as web applications, as Chrome apps that work offline, and as mobile apps for Android and iOS. The apps are compatible with Microsoft Office file formats. The suite also consists of Google Forms, Google Drawings and Google Tables (beta). While Forms and Tables are only available as web applications, Drawings is also available as a Chrome app.
The suite is tightly integrated with Google Drive. All files created with the apps are by default saved to Google Drive.