Aggregators are platforms or services that collect and organize content from various sources into one location. They help users find information more easily by compiling articles, news, or products from different websites. Examples of aggregators include Google News for news articles and Feedly for blog posts. These tools save time by allowing users to access multiple sources without visiting each site individually. Aggregators can also provide personalized content based on user preferences, making it easier to discover new information or products that align with individual interests.