An aggregator is a software application that collects and organizes information from various sources, typically on the internet. It gathers data from different websites or databases and presents it in one centralized location for easy access and consumption by users. Aggregators are commonly used to gather news articles, social media updates, weather forecasts, financial market data, and other types of content. They can also be programmed to filter information based on specific criteria, such as keywords or topics of interest. In summary, an aggregator is a tool that helps people stay informed by bringing relevant information together in one place.