Google Sheets is a free, web-based spreadsheet program offered by Google. It allows users to create, edit, and share spreadsheets online, supporting real-time collaboration. With its straightforward interface and integration with other Google services, it's widely used for data analysis, project management, and personal record-keeping.

Trip Advisor is a widely recognized travel platform that offers user-generated reviews, booking services, and travel recommendations for accommodations, restaurants, and attractions around the world.