An HTTP client is a software application or tool that enables users to send requests to a web server and receive responses. It operates using the Hypertext Transfer Protocol (HTTP), which is the foundation of data communication on the World Wide Web. Common examples of HTTP clients include web browsers like Google Chrome and Mozilla Firefox, as well as command-line tools like cURL. HTTP clients can perform various actions, such as retrieving web pages, submitting forms, and downloading files. They interpret the server's responses, which may include HTML content, images, or other data types. This interaction allows users to access and interact with resources on the internet efficiently.