Google Drive is a free web-based office suite and file storage service that provides alternatives to Microsoft Office applications like Word, PowerPoint, and Excel through online applications called Google Docs, Slides, and Sheets respectively. While Microsoft Office is produced by a for-profit company, Google Drive applications are classified as freeware. Key differences between the services include that Office accounts for a large portion of Microsoft's revenue, making it a high priority, whereas Google Drive currently generates over $1 billion in revenue per year but is considered a lower priority. Google Drive allows for real-time collaboration and includes additional applications like Forms and Drawings.